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<a id="__codelineno-93-82" name="__codelineno-93-82" href="#__codelineno-93-82"></a><span class="w"> </span><span class="fm">panic!</span><span class="p">(</span><span class="s">"索引越界"</span><span class="p">)</span>
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<a id="__codelineno-93-83" name="__codelineno-93-83" href="#__codelineno-93-83"></a><span class="w"> </span><span class="p">};</span>
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<a id="__codelineno-93-84" name="__codelineno-93-84" href="#__codelineno-93-84"></a><span class="w"> </span><span class="kd">let</span><span class="w"> </span><span class="n">num</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">arr</span><span class="p">[</span><span class="n">index</span><span class="p">];</span>
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<a id="__codelineno-93-85" name="__codelineno-93-85" href="#__codelineno-93-85"></a><span class="w"> </span><span class="c1">// 將將索引 index 之後的元素都向前移動一位</span>
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||||
<a id="__codelineno-93-85" name="__codelineno-93-85" href="#__codelineno-93-85"></a><span class="w"> </span><span class="c1">// 將索引 index 之後的元素都向前移動一位</span>
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||||
<a id="__codelineno-93-86" name="__codelineno-93-86" href="#__codelineno-93-86"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="n">j</span><span class="w"> </span><span class="k">in</span><span class="w"> </span><span class="n">index</span><span class="o">..</span><span class="bp">self</span><span class="p">.</span><span class="n">size</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mi">1</span><span class="w"> </span><span class="p">{</span>
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<a id="__codelineno-93-87" name="__codelineno-93-87" href="#__codelineno-93-87"></a><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">arr</span><span class="p">[</span><span class="n">j</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">arr</span><span class="p">[</span><span class="n">j</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="mi">1</span><span class="p">];</span>
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||||
<a id="__codelineno-93-88" name="__codelineno-93-88" href="#__codelineno-93-88"></a><span class="w"> </span><span class="p">}</span>
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@@ -4495,7 +4495,7 @@ T(n) = 3 + 2n
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||||
<p class="admonition-title">函式漸近上界</p>
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||||
<p>若存在正實數 <span class="arithmatex">\(c\)</span> 和實數 <span class="arithmatex">\(n_0\)</span> ，使得對於所有的 <span class="arithmatex">\(n > n_0\)</span> ，均有 <span class="arithmatex">\(T(n) \leq c \cdot f(n)\)</span> ，則可認為 <span class="arithmatex">\(f(n)\)</span> 給出了 <span class="arithmatex">\(T(n)\)</span> 的一個漸近上界，記為 <span class="arithmatex">\(T(n) = O(f(n))\)</span> 。</p>
|
||||
</div>
|
||||
<p>如圖 2-8 所示，計算漸近上界就是尋找一個函式 <span class="arithmatex">\(f(n)\)</span> ，使得當 <span class="arithmatex">\(n\)</span> 趨向於無窮大時，<span class="arithmatex">\(T(n)\)</span> 和 <span class="arithmatex">\(f(n)\)</span> 處於相同的增長級別，僅相差一個常數項 <span class="arithmatex">\(c\)</span> 的倍數。</p>
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||||
<p>如圖 2-8 所示，計算漸近上界就是尋找一個函式 <span class="arithmatex">\(f(n)\)</span> ，使得當 <span class="arithmatex">\(n\)</span> 趨向於無窮大時，<span class="arithmatex">\(T(n)\)</span> 和 <span class="arithmatex">\(f(n)\)</span> 處於相同的增長級別，僅相差一個常數係數 <span class="arithmatex">\(c\)</span>。</p>
|
||||
<p><a class="glightbox" href="../time_complexity.assets/asymptotic_upper_bound.png" data-type="image" data-width="100%" data-height="auto" data-desc-position="bottom"><img alt="函式的漸近上界" class="animation-figure" src="../time_complexity.assets/asymptotic_upper_bound.png" /></a></p>
|
||||
<p align="center"> 圖 2-8 函式的漸近上界 </p>
|
||||
|
||||
@@ -4503,9 +4503,9 @@ T(n) = 3 + 2n
|
||||
<p>漸近上界的數學味兒有點重，如果你感覺沒有完全理解，也無須擔心。我們可以先掌握推算方法，在不斷的實踐中，就可以逐漸領悟其數學意義。</p>
|
||||
<p>根據定義，確定 <span class="arithmatex">\(f(n)\)</span> 之後，我們便可得到時間複雜度 <span class="arithmatex">\(O(f(n))\)</span> 。那麼如何確定漸近上界 <span class="arithmatex">\(f(n)\)</span> 呢？總體分為兩步：首先統計操作數量，然後判斷漸近上界。</p>
|
||||
<h3 id="1">1. 第一步：統計操作數量<a class="headerlink" href="#1" title="Permanent link">¶</a></h3>
|
||||
<p>針對程式碼，逐行從上到下計算即可。然而，由於上述 <span class="arithmatex">\(c \cdot f(n)\)</span> 中的常數項 <span class="arithmatex">\(c\)</span> 可以取任意大小，<strong>因此操作數量 <span class="arithmatex">\(T(n)\)</span> 中的各種係數、常數項都可以忽略</strong>。根據此原則，可以總結出以下計數簡化技巧。</p>
|
||||
<p>針對程式碼，逐行從上到下計算即可。然而，由於上述 <span class="arithmatex">\(c \cdot f(n)\)</span> 中的常數係數 <span class="arithmatex">\(c\)</span> 可以取任意大小，<strong>因此操作數量 <span class="arithmatex">\(T(n)\)</span> 中的各種係數、常數項都可以忽略</strong>。根據此原則，可以總結出以下計數簡化技巧。</p>
|
||||
<ol>
|
||||
<li><strong>忽略 <span class="arithmatex">\(T(n)\)</span> 中的常數項</strong>。因為它們都與 <span class="arithmatex">\(n\)</span> 無關，所以對時間複雜度不產生影響。</li>
|
||||
<li><strong>忽略 <span class="arithmatex">\(T(n)\)</span> 中的常數</strong>。因為它們都與 <span class="arithmatex">\(n\)</span> 無關，所以對時間複雜度不產生影響。</li>
|
||||
<li><strong>省略所有係數</strong>。例如，迴圈 <span class="arithmatex">\(2n\)</span> 次、<span class="arithmatex">\(5n + 1\)</span> 次等，都可以簡化記為 <span class="arithmatex">\(n\)</span> 次，因為 <span class="arithmatex">\(n\)</span> 前面的係數對時間複雜度沒有影響。</li>
|
||||
<li><strong>迴圈巢狀時使用乘法</strong>。總操作數量等於外層迴圈和內層迴圈操作數量之積，每一層迴圈依然可以分別套用第 <code>1.</code> 點和第 <code>2.</code> 點的技巧。</li>
|
||||
</ol>
|
||||
|
||||
@@ -5241,11 +5241,11 @@
|
||||
<a id="__codelineno-23-39" name="__codelineno-23-39" href="#__codelineno-23-39"></a>
|
||||
<a id="__codelineno-23-40" name="__codelineno-23-40" href="#__codelineno-23-40"></a><span class="w"> </span><span class="cm">/* 判斷雙向佇列是否為空 */</span>
|
||||
<a id="__codelineno-23-41" name="__codelineno-23-41" href="#__codelineno-23-41"></a><span class="w"> </span><span class="k">pub</span><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">is_empty</span><span class="p">(</span><span class="o">&</span><span class="bp">self</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="kt">bool</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-23-42" name="__codelineno-23-42" href="#__codelineno-23-42"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">size</span><span class="p">()</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
|
||||
<a id="__codelineno-23-42" name="__codelineno-23-42" href="#__codelineno-23-42"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">que_size</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
|
||||
<a id="__codelineno-23-43" name="__codelineno-23-43" href="#__codelineno-23-43"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-23-44" name="__codelineno-23-44" href="#__codelineno-23-44"></a>
|
||||
<a id="__codelineno-23-45" name="__codelineno-23-45" href="#__codelineno-23-45"></a><span class="w"> </span><span class="cm">/* 入列操作 */</span>
|
||||
<a id="__codelineno-23-46" name="__codelineno-23-46" href="#__codelineno-23-46"></a><span class="w"> </span><span class="k">pub</span><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">push</span><span class="p">(</span><span class="o">&</span><span class="k">mut</span><span class="w"> </span><span class="bp">self</span><span class="p">,</span><span class="w"> </span><span class="n">num</span><span class="p">:</span><span class="w"> </span><span class="nc">T</span><span class="p">,</span><span class="w"> </span><span class="n">is_front</span><span class="p">:</span><span class="w"> </span><span class="kt">bool</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-23-46" name="__codelineno-23-46" href="#__codelineno-23-46"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">push</span><span class="p">(</span><span class="o">&</span><span class="k">mut</span><span class="w"> </span><span class="bp">self</span><span class="p">,</span><span class="w"> </span><span class="n">num</span><span class="p">:</span><span class="w"> </span><span class="nc">T</span><span class="p">,</span><span class="w"> </span><span class="n">is_front</span><span class="p">:</span><span class="w"> </span><span class="kt">bool</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-23-47" name="__codelineno-23-47" href="#__codelineno-23-47"></a><span class="w"> </span><span class="kd">let</span><span class="w"> </span><span class="n">node</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">ListNode</span><span class="p">::</span><span class="n">new</span><span class="p">(</span><span class="n">num</span><span class="p">);</span>
|
||||
<a id="__codelineno-23-48" name="__codelineno-23-48" href="#__codelineno-23-48"></a><span class="w"> </span><span class="c1">// 佇列首入列操作</span>
|
||||
<a id="__codelineno-23-49" name="__codelineno-23-49" href="#__codelineno-23-49"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="n">is_front</span><span class="w"> </span><span class="p">{</span>
|
||||
@@ -5293,7 +5293,7 @@
|
||||
<a id="__codelineno-23-91" name="__codelineno-23-91" href="#__codelineno-23-91"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-23-92" name="__codelineno-23-92" href="#__codelineno-23-92"></a>
|
||||
<a id="__codelineno-23-93" name="__codelineno-23-93" href="#__codelineno-23-93"></a><span class="w"> </span><span class="cm">/* 出列操作 */</span>
|
||||
<a id="__codelineno-23-94" name="__codelineno-23-94" href="#__codelineno-23-94"></a><span class="w"> </span><span class="k">pub</span><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">pop</span><span class="p">(</span><span class="o">&</span><span class="k">mut</span><span class="w"> </span><span class="bp">self</span><span class="p">,</span><span class="w"> </span><span class="n">is_front</span><span class="p">:</span><span class="w"> </span><span class="kt">bool</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="nb">Option</span><span class="o"><</span><span class="n">T</span><span class="o">></span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-23-94" name="__codelineno-23-94" href="#__codelineno-23-94"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">pop</span><span class="p">(</span><span class="o">&</span><span class="k">mut</span><span class="w"> </span><span class="bp">self</span><span class="p">,</span><span class="w"> </span><span class="n">is_front</span><span class="p">:</span><span class="w"> </span><span class="kt">bool</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="nb">Option</span><span class="o"><</span><span class="n">T</span><span class="o">></span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-23-95" name="__codelineno-23-95" href="#__codelineno-23-95"></a><span class="w"> </span><span class="c1">// 若佇列為空，直接返回 None</span>
|
||||
<a id="__codelineno-23-96" name="__codelineno-23-96" href="#__codelineno-23-96"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">is_empty</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-23-97" name="__codelineno-23-97" href="#__codelineno-23-97"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="nb">None</span><span class="p">;</span>
|
||||
@@ -6929,17 +6929,17 @@
|
||||
</div>
|
||||
<div class="tabbed-block">
|
||||
<div class="highlight"><span class="filename">array_deque.rs</span><pre><span></span><code><a id="__codelineno-37-1" name="__codelineno-37-1" href="#__codelineno-37-1"></a><span class="cm">/* 基於環形陣列實現的雙向佇列 */</span>
|
||||
<a id="__codelineno-37-2" name="__codelineno-37-2" href="#__codelineno-37-2"></a><span class="k">struct</span><span class="w"> </span><span class="nc">ArrayDeque</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-3" name="__codelineno-37-3" href="#__codelineno-37-3"></a><span class="w"> </span><span class="n">nums</span><span class="p">:</span><span class="w"> </span><span class="nb">Vec</span><span class="o"><</span><span class="kt">i32</span><span class="o">></span><span class="p">,</span><span class="w"> </span><span class="c1">// 用於儲存雙向佇列元素的陣列</span>
|
||||
<a id="__codelineno-37-2" name="__codelineno-37-2" href="#__codelineno-37-2"></a><span class="k">struct</span><span class="w"> </span><span class="nc">ArrayDeque</span><span class="o"><</span><span class="n">T</span><span class="o">></span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-3" name="__codelineno-37-3" href="#__codelineno-37-3"></a><span class="w"> </span><span class="n">nums</span><span class="p">:</span><span class="w"> </span><span class="nb">Vec</span><span class="o"><</span><span class="n">T</span><span class="o">></span><span class="p">,</span><span class="w"> </span><span class="c1">// 用於儲存雙向佇列元素的陣列</span>
|
||||
<a id="__codelineno-37-4" name="__codelineno-37-4" href="#__codelineno-37-4"></a><span class="w"> </span><span class="n">front</span><span class="p">:</span><span class="w"> </span><span class="kt">usize</span><span class="p">,</span><span class="w"> </span><span class="c1">// 佇列首指標，指向佇列首元素</span>
|
||||
<a id="__codelineno-37-5" name="__codelineno-37-5" href="#__codelineno-37-5"></a><span class="w"> </span><span class="n">que_size</span><span class="p">:</span><span class="w"> </span><span class="kt">usize</span><span class="p">,</span><span class="w"> </span><span class="c1">// 雙向佇列長度</span>
|
||||
<a id="__codelineno-37-6" name="__codelineno-37-6" href="#__codelineno-37-6"></a><span class="p">}</span>
|
||||
<a id="__codelineno-37-7" name="__codelineno-37-7" href="#__codelineno-37-7"></a>
|
||||
<a id="__codelineno-37-8" name="__codelineno-37-8" href="#__codelineno-37-8"></a><span class="k">impl</span><span class="w"> </span><span class="n">ArrayDeque</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-8" name="__codelineno-37-8" href="#__codelineno-37-8"></a><span class="k">impl</span><span class="o"><</span><span class="n">T</span><span class="p">:</span><span class="w"> </span><span class="nb">Copy</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="nb">Default</span><span class="o">></span><span class="w"> </span><span class="n">ArrayDeque</span><span class="o"><</span><span class="n">T</span><span class="o">></span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-9" name="__codelineno-37-9" href="#__codelineno-37-9"></a><span class="w"> </span><span class="cm">/* 建構子 */</span>
|
||||
<a id="__codelineno-37-10" name="__codelineno-37-10" href="#__codelineno-37-10"></a><span class="w"> </span><span class="k">pub</span><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">new</span><span class="p">(</span><span class="n">capacity</span><span class="p">:</span><span class="w"> </span><span class="kt">usize</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="nc">Self</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-11" name="__codelineno-37-11" href="#__codelineno-37-11"></a><span class="w"> </span><span class="bp">Self</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-12" name="__codelineno-37-12" href="#__codelineno-37-12"></a><span class="w"> </span><span class="n">nums</span><span class="p">:</span><span class="w"> </span><span class="nc">vec</span><span class="o">!</span><span class="p">[</span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">capacity</span><span class="p">],</span>
|
||||
<a id="__codelineno-37-12" name="__codelineno-37-12" href="#__codelineno-37-12"></a><span class="w"> </span><span class="n">nums</span><span class="p">:</span><span class="w"> </span><span class="nc">vec</span><span class="o">!</span><span class="p">[</span><span class="n">T</span><span class="p">::</span><span class="n">default</span><span class="p">();</span><span class="w"> </span><span class="n">capacity</span><span class="p">],</span>
|
||||
<a id="__codelineno-37-13" name="__codelineno-37-13" href="#__codelineno-37-13"></a><span class="w"> </span><span class="n">front</span><span class="p">:</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span>
|
||||
<a id="__codelineno-37-14" name="__codelineno-37-14" href="#__codelineno-37-14"></a><span class="w"> </span><span class="n">que_size</span><span class="p">:</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span>
|
||||
<a id="__codelineno-37-15" name="__codelineno-37-15" href="#__codelineno-37-15"></a><span class="w"> </span><span class="p">}</span>
|
||||
@@ -6965,11 +6965,11 @@
|
||||
<a id="__codelineno-37-35" name="__codelineno-37-35" href="#__codelineno-37-35"></a><span class="w"> </span><span class="c1">// 透過取餘操作實現陣列首尾相連</span>
|
||||
<a id="__codelineno-37-36" name="__codelineno-37-36" href="#__codelineno-37-36"></a><span class="w"> </span><span class="c1">// 當 i 越過陣列尾部後，回到頭部</span>
|
||||
<a id="__codelineno-37-37" name="__codelineno-37-37" href="#__codelineno-37-37"></a><span class="w"> </span><span class="c1">// 當 i 越過陣列頭部後，回到尾部</span>
|
||||
<a id="__codelineno-37-38" name="__codelineno-37-38" href="#__codelineno-37-38"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="p">((</span><span class="n">i</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">capacity</span><span class="p">()</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="kt">i32</span><span class="p">)</span><span class="w"> </span><span class="o">%</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">capacity</span><span class="p">()</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="kt">i32</span><span class="p">)</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="kt">usize</span><span class="p">;</span>
|
||||
<a id="__codelineno-37-38" name="__codelineno-37-38" href="#__codelineno-37-38"></a><span class="w"> </span><span class="p">((</span><span class="n">i</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">capacity</span><span class="p">()</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="kt">i32</span><span class="p">)</span><span class="w"> </span><span class="o">%</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">capacity</span><span class="p">()</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="kt">i32</span><span class="p">)</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="kt">usize</span>
|
||||
<a id="__codelineno-37-39" name="__codelineno-37-39" href="#__codelineno-37-39"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-37-40" name="__codelineno-37-40" href="#__codelineno-37-40"></a>
|
||||
<a id="__codelineno-37-41" name="__codelineno-37-41" href="#__codelineno-37-41"></a><span class="w"> </span><span class="cm">/* 佇列首入列 */</span>
|
||||
<a id="__codelineno-37-42" name="__codelineno-37-42" href="#__codelineno-37-42"></a><span class="w"> </span><span class="k">pub</span><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">push_first</span><span class="p">(</span><span class="o">&</span><span class="k">mut</span><span class="w"> </span><span class="bp">self</span><span class="p">,</span><span class="w"> </span><span class="n">num</span><span class="p">:</span><span class="w"> </span><span class="kt">i32</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-42" name="__codelineno-37-42" href="#__codelineno-37-42"></a><span class="w"> </span><span class="k">pub</span><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">push_first</span><span class="p">(</span><span class="o">&</span><span class="k">mut</span><span class="w"> </span><span class="bp">self</span><span class="p">,</span><span class="w"> </span><span class="n">num</span><span class="p">:</span><span class="w"> </span><span class="nc">T</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-43" name="__codelineno-37-43" href="#__codelineno-37-43"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">que_size</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">capacity</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-44" name="__codelineno-37-44" href="#__codelineno-37-44"></a><span class="w"> </span><span class="fm">println!</span><span class="p">(</span><span class="s">"雙向佇列已滿"</span><span class="p">);</span>
|
||||
<a id="__codelineno-37-45" name="__codelineno-37-45" href="#__codelineno-37-45"></a><span class="w"> </span><span class="k">return</span><span class="p">;</span>
|
||||
@@ -6983,7 +6983,7 @@
|
||||
<a id="__codelineno-37-53" name="__codelineno-37-53" href="#__codelineno-37-53"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-37-54" name="__codelineno-37-54" href="#__codelineno-37-54"></a>
|
||||
<a id="__codelineno-37-55" name="__codelineno-37-55" href="#__codelineno-37-55"></a><span class="w"> </span><span class="cm">/* 佇列尾入列 */</span>
|
||||
<a id="__codelineno-37-56" name="__codelineno-37-56" href="#__codelineno-37-56"></a><span class="w"> </span><span class="k">pub</span><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">push_last</span><span class="p">(</span><span class="o">&</span><span class="k">mut</span><span class="w"> </span><span class="bp">self</span><span class="p">,</span><span class="w"> </span><span class="n">num</span><span class="p">:</span><span class="w"> </span><span class="kt">i32</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-56" name="__codelineno-37-56" href="#__codelineno-37-56"></a><span class="w"> </span><span class="k">pub</span><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">push_last</span><span class="p">(</span><span class="o">&</span><span class="k">mut</span><span class="w"> </span><span class="bp">self</span><span class="p">,</span><span class="w"> </span><span class="n">num</span><span class="p">:</span><span class="w"> </span><span class="nc">T</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-57" name="__codelineno-37-57" href="#__codelineno-37-57"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">que_size</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">capacity</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-58" name="__codelineno-37-58" href="#__codelineno-37-58"></a><span class="w"> </span><span class="fm">println!</span><span class="p">(</span><span class="s">"雙向佇列已滿"</span><span class="p">);</span>
|
||||
<a id="__codelineno-37-59" name="__codelineno-37-59" href="#__codelineno-37-59"></a><span class="w"> </span><span class="k">return</span><span class="p">;</span>
|
||||
@@ -6996,7 +6996,7 @@
|
||||
<a id="__codelineno-37-66" name="__codelineno-37-66" href="#__codelineno-37-66"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-37-67" name="__codelineno-37-67" href="#__codelineno-37-67"></a>
|
||||
<a id="__codelineno-37-68" name="__codelineno-37-68" href="#__codelineno-37-68"></a><span class="w"> </span><span class="cm">/* 佇列首出列 */</span>
|
||||
<a id="__codelineno-37-69" name="__codelineno-37-69" href="#__codelineno-37-69"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">pop_first</span><span class="p">(</span><span class="o">&</span><span class="k">mut</span><span class="w"> </span><span class="bp">self</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="kt">i32</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-69" name="__codelineno-37-69" href="#__codelineno-37-69"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">pop_first</span><span class="p">(</span><span class="o">&</span><span class="k">mut</span><span class="w"> </span><span class="bp">self</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="nc">T</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-70" name="__codelineno-37-70" href="#__codelineno-37-70"></a><span class="w"> </span><span class="kd">let</span><span class="w"> </span><span class="n">num</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">peek_first</span><span class="p">();</span>
|
||||
<a id="__codelineno-37-71" name="__codelineno-37-71" href="#__codelineno-37-71"></a><span class="w"> </span><span class="c1">// 佇列首指標向後移動一位</span>
|
||||
<a id="__codelineno-37-72" name="__codelineno-37-72" href="#__codelineno-37-72"></a><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">front</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">index</span><span class="p">(</span><span class="bp">self</span><span class="p">.</span><span class="n">front</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="kt">i32</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="mi">1</span><span class="p">);</span>
|
||||
@@ -7005,14 +7005,14 @@
|
||||
<a id="__codelineno-37-75" name="__codelineno-37-75" href="#__codelineno-37-75"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-37-76" name="__codelineno-37-76" href="#__codelineno-37-76"></a>
|
||||
<a id="__codelineno-37-77" name="__codelineno-37-77" href="#__codelineno-37-77"></a><span class="w"> </span><span class="cm">/* 佇列尾出列 */</span>
|
||||
<a id="__codelineno-37-78" name="__codelineno-37-78" href="#__codelineno-37-78"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">pop_last</span><span class="p">(</span><span class="o">&</span><span class="k">mut</span><span class="w"> </span><span class="bp">self</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="kt">i32</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-78" name="__codelineno-37-78" href="#__codelineno-37-78"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">pop_last</span><span class="p">(</span><span class="o">&</span><span class="k">mut</span><span class="w"> </span><span class="bp">self</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="nc">T</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-79" name="__codelineno-37-79" href="#__codelineno-37-79"></a><span class="w"> </span><span class="kd">let</span><span class="w"> </span><span class="n">num</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">peek_last</span><span class="p">();</span>
|
||||
<a id="__codelineno-37-80" name="__codelineno-37-80" href="#__codelineno-37-80"></a><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">que_size</span><span class="w"> </span><span class="o">-=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
|
||||
<a id="__codelineno-37-81" name="__codelineno-37-81" href="#__codelineno-37-81"></a><span class="w"> </span><span class="n">num</span>
|
||||
<a id="__codelineno-37-82" name="__codelineno-37-82" href="#__codelineno-37-82"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-37-83" name="__codelineno-37-83" href="#__codelineno-37-83"></a>
|
||||
<a id="__codelineno-37-84" name="__codelineno-37-84" href="#__codelineno-37-84"></a><span class="w"> </span><span class="cm">/* 訪問佇列首元素 */</span>
|
||||
<a id="__codelineno-37-85" name="__codelineno-37-85" href="#__codelineno-37-85"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">peek_first</span><span class="p">(</span><span class="o">&</span><span class="bp">self</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="kt">i32</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-85" name="__codelineno-37-85" href="#__codelineno-37-85"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">peek_first</span><span class="p">(</span><span class="o">&</span><span class="bp">self</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="nc">T</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-86" name="__codelineno-37-86" href="#__codelineno-37-86"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">is_empty</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-87" name="__codelineno-37-87" href="#__codelineno-37-87"></a><span class="w"> </span><span class="fm">panic!</span><span class="p">(</span><span class="s">"雙向佇列為空"</span><span class="p">)</span>
|
||||
<a id="__codelineno-37-88" name="__codelineno-37-88" href="#__codelineno-37-88"></a><span class="w"> </span><span class="p">};</span>
|
||||
@@ -7020,7 +7020,7 @@
|
||||
<a id="__codelineno-37-90" name="__codelineno-37-90" href="#__codelineno-37-90"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-37-91" name="__codelineno-37-91" href="#__codelineno-37-91"></a>
|
||||
<a id="__codelineno-37-92" name="__codelineno-37-92" href="#__codelineno-37-92"></a><span class="w"> </span><span class="cm">/* 訪問佇列尾元素 */</span>
|
||||
<a id="__codelineno-37-93" name="__codelineno-37-93" href="#__codelineno-37-93"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">peek_last</span><span class="p">(</span><span class="o">&</span><span class="bp">self</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="kt">i32</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-93" name="__codelineno-37-93" href="#__codelineno-37-93"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">peek_last</span><span class="p">(</span><span class="o">&</span><span class="bp">self</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="nc">T</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-94" name="__codelineno-37-94" href="#__codelineno-37-94"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">is_empty</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-95" name="__codelineno-37-95" href="#__codelineno-37-95"></a><span class="w"> </span><span class="fm">panic!</span><span class="p">(</span><span class="s">"雙向佇列為空"</span><span class="p">)</span>
|
||||
<a id="__codelineno-37-96" name="__codelineno-37-96" href="#__codelineno-37-96"></a><span class="w"> </span><span class="p">};</span>
|
||||
@@ -7030,9 +7030,9 @@
|
||||
<a id="__codelineno-37-100" name="__codelineno-37-100" href="#__codelineno-37-100"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-37-101" name="__codelineno-37-101" href="#__codelineno-37-101"></a>
|
||||
<a id="__codelineno-37-102" name="__codelineno-37-102" href="#__codelineno-37-102"></a><span class="w"> </span><span class="cm">/* 返回陣列用於列印 */</span>
|
||||
<a id="__codelineno-37-103" name="__codelineno-37-103" href="#__codelineno-37-103"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">to_array</span><span class="p">(</span><span class="o">&</span><span class="bp">self</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="nb">Vec</span><span class="o"><</span><span class="kt">i32</span><span class="o">></span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-103" name="__codelineno-37-103" href="#__codelineno-37-103"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">to_array</span><span class="p">(</span><span class="o">&</span><span class="bp">self</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="nb">Vec</span><span class="o"><</span><span class="n">T</span><span class="o">></span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-104" name="__codelineno-37-104" href="#__codelineno-37-104"></a><span class="w"> </span><span class="c1">// 僅轉換有效長度範圍內的串列元素</span>
|
||||
<a id="__codelineno-37-105" name="__codelineno-37-105" href="#__codelineno-37-105"></a><span class="w"> </span><span class="kd">let</span><span class="w"> </span><span class="k">mut</span><span class="w"> </span><span class="n">res</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="fm">vec!</span><span class="p">[</span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">que_size</span><span class="p">];</span>
|
||||
<a id="__codelineno-37-105" name="__codelineno-37-105" href="#__codelineno-37-105"></a><span class="w"> </span><span class="kd">let</span><span class="w"> </span><span class="k">mut</span><span class="w"> </span><span class="n">res</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="fm">vec!</span><span class="p">[</span><span class="n">T</span><span class="p">::</span><span class="n">default</span><span class="p">();</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">que_size</span><span class="p">];</span>
|
||||
<a id="__codelineno-37-106" name="__codelineno-37-106" href="#__codelineno-37-106"></a><span class="w"> </span><span class="kd">let</span><span class="w"> </span><span class="k">mut</span><span class="w"> </span><span class="n">j</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">front</span><span class="p">;</span>
|
||||
<a id="__codelineno-37-107" name="__codelineno-37-107" href="#__codelineno-37-107"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="k">in</span><span class="w"> </span><span class="mi">0</span><span class="o">..</span><span class="bp">self</span><span class="p">.</span><span class="n">que_size</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-108" name="__codelineno-37-108" href="#__codelineno-37-108"></a><span class="w"> </span><span class="n">res</span><span class="p">[</span><span class="n">i</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">nums</span><span class="p">[</span><span class="bp">self</span><span class="p">.</span><span class="n">index</span><span class="p">(</span><span class="n">j</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="kt">i32</span><span class="p">)];</span>
|
||||
|
||||
@@ -4657,7 +4657,7 @@
|
||||
<a id="__codelineno-23-22" name="__codelineno-23-22" href="#__codelineno-23-22"></a>
|
||||
<a id="__codelineno-23-23" name="__codelineno-23-23" href="#__codelineno-23-23"></a><span class="w"> </span><span class="cm">/* 判斷佇列是否為空 */</span>
|
||||
<a id="__codelineno-23-24" name="__codelineno-23-24" href="#__codelineno-23-24"></a><span class="w"> </span><span class="k">pub</span><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">is_empty</span><span class="p">(</span><span class="o">&</span><span class="bp">self</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="kt">bool</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-23-25" name="__codelineno-23-25" href="#__codelineno-23-25"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">size</span><span class="p">()</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
|
||||
<a id="__codelineno-23-25" name="__codelineno-23-25" href="#__codelineno-23-25"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">que_size</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
|
||||
<a id="__codelineno-23-26" name="__codelineno-23-26" href="#__codelineno-23-26"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-23-27" name="__codelineno-23-27" href="#__codelineno-23-27"></a>
|
||||
<a id="__codelineno-23-28" name="__codelineno-23-28" href="#__codelineno-23-28"></a><span class="w"> </span><span class="cm">/* 入列 */</span>
|
||||
@@ -5677,18 +5677,18 @@
|
||||
</div>
|
||||
<div class="tabbed-block">
|
||||
<div class="highlight"><span class="filename">array_queue.rs</span><pre><span></span><code><a id="__codelineno-37-1" name="__codelineno-37-1" href="#__codelineno-37-1"></a><span class="cm">/* 基於環形陣列實現的佇列 */</span>
|
||||
<a id="__codelineno-37-2" name="__codelineno-37-2" href="#__codelineno-37-2"></a><span class="k">struct</span><span class="w"> </span><span class="nc">ArrayQueue</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-3" name="__codelineno-37-3" href="#__codelineno-37-3"></a><span class="w"> </span><span class="n">nums</span><span class="p">:</span><span class="w"> </span><span class="nb">Vec</span><span class="o"><</span><span class="kt">i32</span><span class="o">></span><span class="p">,</span><span class="w"> </span><span class="c1">// 用於儲存佇列元素的陣列</span>
|
||||
<a id="__codelineno-37-2" name="__codelineno-37-2" href="#__codelineno-37-2"></a><span class="k">struct</span><span class="w"> </span><span class="nc">ArrayQueue</span><span class="o"><</span><span class="n">T</span><span class="o">></span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-3" name="__codelineno-37-3" href="#__codelineno-37-3"></a><span class="w"> </span><span class="n">nums</span><span class="p">:</span><span class="w"> </span><span class="nb">Vec</span><span class="o"><</span><span class="n">T</span><span class="o">></span><span class="p">,</span><span class="w"> </span><span class="c1">// 用於儲存佇列元素的陣列</span>
|
||||
<a id="__codelineno-37-4" name="__codelineno-37-4" href="#__codelineno-37-4"></a><span class="w"> </span><span class="n">front</span><span class="p">:</span><span class="w"> </span><span class="kt">i32</span><span class="p">,</span><span class="w"> </span><span class="c1">// 佇列首指標，指向佇列首元素</span>
|
||||
<a id="__codelineno-37-5" name="__codelineno-37-5" href="#__codelineno-37-5"></a><span class="w"> </span><span class="n">que_size</span><span class="p">:</span><span class="w"> </span><span class="kt">i32</span><span class="p">,</span><span class="w"> </span><span class="c1">// 佇列長度</span>
|
||||
<a id="__codelineno-37-6" name="__codelineno-37-6" href="#__codelineno-37-6"></a><span class="w"> </span><span class="n">que_capacity</span><span class="p">:</span><span class="w"> </span><span class="kt">i32</span><span class="p">,</span><span class="w"> </span><span class="c1">// 佇列容量</span>
|
||||
<a id="__codelineno-37-7" name="__codelineno-37-7" href="#__codelineno-37-7"></a><span class="p">}</span>
|
||||
<a id="__codelineno-37-8" name="__codelineno-37-8" href="#__codelineno-37-8"></a>
|
||||
<a id="__codelineno-37-9" name="__codelineno-37-9" href="#__codelineno-37-9"></a><span class="k">impl</span><span class="w"> </span><span class="n">ArrayQueue</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-9" name="__codelineno-37-9" href="#__codelineno-37-9"></a><span class="k">impl</span><span class="o"><</span><span class="n">T</span><span class="p">:</span><span class="w"> </span><span class="nb">Copy</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="nb">Default</span><span class="o">></span><span class="w"> </span><span class="n">ArrayQueue</span><span class="o"><</span><span class="n">T</span><span class="o">></span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-10" name="__codelineno-37-10" href="#__codelineno-37-10"></a><span class="w"> </span><span class="cm">/* 建構子 */</span>
|
||||
<a id="__codelineno-37-11" name="__codelineno-37-11" href="#__codelineno-37-11"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">new</span><span class="p">(</span><span class="n">capacity</span><span class="p">:</span><span class="w"> </span><span class="kt">i32</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="nc">ArrayQueue</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-11" name="__codelineno-37-11" href="#__codelineno-37-11"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">new</span><span class="p">(</span><span class="n">capacity</span><span class="p">:</span><span class="w"> </span><span class="kt">i32</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="nc">ArrayQueue</span><span class="o"><</span><span class="n">T</span><span class="o">></span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-12" name="__codelineno-37-12" href="#__codelineno-37-12"></a><span class="w"> </span><span class="n">ArrayQueue</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-13" name="__codelineno-37-13" href="#__codelineno-37-13"></a><span class="w"> </span><span class="n">nums</span><span class="p">:</span><span class="w"> </span><span class="nc">vec</span><span class="o">!</span><span class="p">[</span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">capacity</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="kt">usize</span><span class="p">],</span>
|
||||
<a id="__codelineno-37-13" name="__codelineno-37-13" href="#__codelineno-37-13"></a><span class="w"> </span><span class="n">nums</span><span class="p">:</span><span class="w"> </span><span class="nc">vec</span><span class="o">!</span><span class="p">[</span><span class="n">T</span><span class="p">::</span><span class="n">default</span><span class="p">();</span><span class="w"> </span><span class="n">capacity</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="kt">usize</span><span class="p">],</span>
|
||||
<a id="__codelineno-37-14" name="__codelineno-37-14" href="#__codelineno-37-14"></a><span class="w"> </span><span class="n">front</span><span class="p">:</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span>
|
||||
<a id="__codelineno-37-15" name="__codelineno-37-15" href="#__codelineno-37-15"></a><span class="w"> </span><span class="n">que_size</span><span class="p">:</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span>
|
||||
<a id="__codelineno-37-16" name="__codelineno-37-16" href="#__codelineno-37-16"></a><span class="w"> </span><span class="n">que_capacity</span><span class="p">:</span><span class="w"> </span><span class="nc">capacity</span><span class="p">,</span>
|
||||
@@ -5711,7 +5711,7 @@
|
||||
<a id="__codelineno-37-33" name="__codelineno-37-33" href="#__codelineno-37-33"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-37-34" name="__codelineno-37-34" href="#__codelineno-37-34"></a>
|
||||
<a id="__codelineno-37-35" name="__codelineno-37-35" href="#__codelineno-37-35"></a><span class="w"> </span><span class="cm">/* 入列 */</span>
|
||||
<a id="__codelineno-37-36" name="__codelineno-37-36" href="#__codelineno-37-36"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">push</span><span class="p">(</span><span class="o">&</span><span class="k">mut</span><span class="w"> </span><span class="bp">self</span><span class="p">,</span><span class="w"> </span><span class="n">num</span><span class="p">:</span><span class="w"> </span><span class="kt">i32</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-36" name="__codelineno-37-36" href="#__codelineno-37-36"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">push</span><span class="p">(</span><span class="o">&</span><span class="k">mut</span><span class="w"> </span><span class="bp">self</span><span class="p">,</span><span class="w"> </span><span class="n">num</span><span class="p">:</span><span class="w"> </span><span class="nc">T</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-37" name="__codelineno-37-37" href="#__codelineno-37-37"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">que_size</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">capacity</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-38" name="__codelineno-37-38" href="#__codelineno-37-38"></a><span class="w"> </span><span class="fm">println!</span><span class="p">(</span><span class="s">"佇列已滿"</span><span class="p">);</span>
|
||||
<a id="__codelineno-37-39" name="__codelineno-37-39" href="#__codelineno-37-39"></a><span class="w"> </span><span class="k">return</span><span class="p">;</span>
|
||||
@@ -5725,7 +5725,7 @@
|
||||
<a id="__codelineno-37-47" name="__codelineno-37-47" href="#__codelineno-37-47"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-37-48" name="__codelineno-37-48" href="#__codelineno-37-48"></a>
|
||||
<a id="__codelineno-37-49" name="__codelineno-37-49" href="#__codelineno-37-49"></a><span class="w"> </span><span class="cm">/* 出列 */</span>
|
||||
<a id="__codelineno-37-50" name="__codelineno-37-50" href="#__codelineno-37-50"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">pop</span><span class="p">(</span><span class="o">&</span><span class="k">mut</span><span class="w"> </span><span class="bp">self</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="kt">i32</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-50" name="__codelineno-37-50" href="#__codelineno-37-50"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">pop</span><span class="p">(</span><span class="o">&</span><span class="k">mut</span><span class="w"> </span><span class="bp">self</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="nc">T</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-51" name="__codelineno-37-51" href="#__codelineno-37-51"></a><span class="w"> </span><span class="kd">let</span><span class="w"> </span><span class="n">num</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">peek</span><span class="p">();</span>
|
||||
<a id="__codelineno-37-52" name="__codelineno-37-52" href="#__codelineno-37-52"></a><span class="w"> </span><span class="c1">// 佇列首指標向後移動一位，若越過尾部，則返回到陣列頭部</span>
|
||||
<a id="__codelineno-37-53" name="__codelineno-37-53" href="#__codelineno-37-53"></a><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">front</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="bp">self</span><span class="p">.</span><span class="n">front</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="mi">1</span><span class="p">)</span><span class="w"> </span><span class="o">%</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">que_capacity</span><span class="p">;</span>
|
||||
@@ -5734,7 +5734,7 @@
|
||||
<a id="__codelineno-37-56" name="__codelineno-37-56" href="#__codelineno-37-56"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-37-57" name="__codelineno-37-57" href="#__codelineno-37-57"></a>
|
||||
<a id="__codelineno-37-58" name="__codelineno-37-58" href="#__codelineno-37-58"></a><span class="w"> </span><span class="cm">/* 訪問佇列首元素 */</span>
|
||||
<a id="__codelineno-37-59" name="__codelineno-37-59" href="#__codelineno-37-59"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">peek</span><span class="p">(</span><span class="o">&</span><span class="bp">self</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="kt">i32</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-59" name="__codelineno-37-59" href="#__codelineno-37-59"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">peek</span><span class="p">(</span><span class="o">&</span><span class="bp">self</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="nc">T</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-60" name="__codelineno-37-60" href="#__codelineno-37-60"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">is_empty</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-61" name="__codelineno-37-61" href="#__codelineno-37-61"></a><span class="w"> </span><span class="fm">panic!</span><span class="p">(</span><span class="s">"index out of bounds"</span><span class="p">);</span>
|
||||
<a id="__codelineno-37-62" name="__codelineno-37-62" href="#__codelineno-37-62"></a><span class="w"> </span><span class="p">}</span>
|
||||
@@ -5742,10 +5742,10 @@
|
||||
<a id="__codelineno-37-64" name="__codelineno-37-64" href="#__codelineno-37-64"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-37-65" name="__codelineno-37-65" href="#__codelineno-37-65"></a>
|
||||
<a id="__codelineno-37-66" name="__codelineno-37-66" href="#__codelineno-37-66"></a><span class="w"> </span><span class="cm">/* 返回陣列 */</span>
|
||||
<a id="__codelineno-37-67" name="__codelineno-37-67" href="#__codelineno-37-67"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">to_vector</span><span class="p">(</span><span class="o">&</span><span class="bp">self</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="nb">Vec</span><span class="o"><</span><span class="kt">i32</span><span class="o">></span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-67" name="__codelineno-37-67" href="#__codelineno-37-67"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">to_vector</span><span class="p">(</span><span class="o">&</span><span class="bp">self</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="nb">Vec</span><span class="o"><</span><span class="n">T</span><span class="o">></span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-68" name="__codelineno-37-68" href="#__codelineno-37-68"></a><span class="w"> </span><span class="kd">let</span><span class="w"> </span><span class="n">cap</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">que_capacity</span><span class="p">;</span>
|
||||
<a id="__codelineno-37-69" name="__codelineno-37-69" href="#__codelineno-37-69"></a><span class="w"> </span><span class="kd">let</span><span class="w"> </span><span class="k">mut</span><span class="w"> </span><span class="n">j</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">front</span><span class="p">;</span>
|
||||
<a id="__codelineno-37-70" name="__codelineno-37-70" href="#__codelineno-37-70"></a><span class="w"> </span><span class="kd">let</span><span class="w"> </span><span class="k">mut</span><span class="w"> </span><span class="n">arr</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="fm">vec!</span><span class="p">[</span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">que_size</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="kt">usize</span><span class="p">];</span>
|
||||
<a id="__codelineno-37-70" name="__codelineno-37-70" href="#__codelineno-37-70"></a><span class="w"> </span><span class="kd">let</span><span class="w"> </span><span class="k">mut</span><span class="w"> </span><span class="n">arr</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="fm">vec!</span><span class="p">[</span><span class="n">T</span><span class="p">::</span><span class="n">default</span><span class="p">();</span><span class="w"> </span><span class="n">cap</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="kt">usize</span><span class="p">];</span>
|
||||
<a id="__codelineno-37-71" name="__codelineno-37-71" href="#__codelineno-37-71"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="k">in</span><span class="w"> </span><span class="mi">0</span><span class="o">..</span><span class="bp">self</span><span class="p">.</span><span class="n">que_size</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-37-72" name="__codelineno-37-72" href="#__codelineno-37-72"></a><span class="w"> </span><span class="n">arr</span><span class="p">[</span><span class="n">i</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="kt">usize</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">nums</span><span class="p">[(</span><span class="n">j</span><span class="w"> </span><span class="o">%</span><span class="w"> </span><span class="n">cap</span><span class="p">)</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="kt">usize</span><span class="p">];</span>
|
||||
<a id="__codelineno-37-73" name="__codelineno-37-73" href="#__codelineno-37-73"></a><span class="w"> </span><span class="n">j</span><span class="w"> </span><span class="o">+=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
|
||||
|
||||
@@ -4613,15 +4613,19 @@
|
||||
<a id="__codelineno-23-47" name="__codelineno-23-47" href="#__codelineno-23-47"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-23-48" name="__codelineno-23-48" href="#__codelineno-23-48"></a>
|
||||
<a id="__codelineno-23-49" name="__codelineno-23-49" href="#__codelineno-23-49"></a><span class="w"> </span><span class="cm">/* 將 List 轉化為 Array 並返回 */</span>
|
||||
<a id="__codelineno-23-50" name="__codelineno-23-50" href="#__codelineno-23-50"></a><span class="w"> </span><span class="k">pub</span><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">to_array</span><span class="p">(</span><span class="o">&</span><span class="bp">self</span><span class="p">,</span><span class="w"> </span><span class="n">head</span><span class="p">:</span><span class="w"> </span><span class="nb">Option</span><span class="o"><&</span><span class="n">Rc</span><span class="o"><</span><span class="n">RefCell</span><span class="o"><</span><span class="n">ListNode</span><span class="o"><</span><span class="n">T</span><span class="o">>>>></span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="nb">Vec</span><span class="o"><</span><span class="n">T</span><span class="o">></span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-23-51" name="__codelineno-23-51" href="#__codelineno-23-51"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="kd">let</span><span class="w"> </span><span class="nb">Some</span><span class="p">(</span><span class="n">node</span><span class="p">)</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">head</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-23-52" name="__codelineno-23-52" href="#__codelineno-23-52"></a><span class="w"> </span><span class="kd">let</span><span class="w"> </span><span class="k">mut</span><span class="w"> </span><span class="n">nums</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="bp">self</span><span class="p">.</span><span class="n">to_array</span><span class="p">(</span><span class="n">node</span><span class="p">.</span><span class="n">borrow</span><span class="p">().</span><span class="n">next</span><span class="p">.</span><span class="n">as_ref</span><span class="p">());</span>
|
||||
<a id="__codelineno-23-53" name="__codelineno-23-53" href="#__codelineno-23-53"></a><span class="w"> </span><span class="n">nums</span><span class="p">.</span><span class="n">push</span><span class="p">(</span><span class="n">node</span><span class="p">.</span><span class="n">borrow</span><span class="p">().</span><span class="n">val</span><span class="p">);</span>
|
||||
<a id="__codelineno-23-54" name="__codelineno-23-54" href="#__codelineno-23-54"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">nums</span><span class="p">;</span>
|
||||
<a id="__codelineno-23-55" name="__codelineno-23-55" href="#__codelineno-23-55"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-23-56" name="__codelineno-23-56" href="#__codelineno-23-56"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="nb">Vec</span><span class="p">::</span><span class="n">new</span><span class="p">();</span>
|
||||
<a id="__codelineno-23-57" name="__codelineno-23-57" href="#__codelineno-23-57"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-23-58" name="__codelineno-23-58" href="#__codelineno-23-58"></a><span class="p">}</span>
|
||||
<a id="__codelineno-23-50" name="__codelineno-23-50" href="#__codelineno-23-50"></a><span class="w"> </span><span class="k">pub</span><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">to_array</span><span class="p">(</span><span class="o">&</span><span class="bp">self</span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="nb">Vec</span><span class="o"><</span><span class="n">T</span><span class="o">></span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-23-51" name="__codelineno-23-51" href="#__codelineno-23-51"></a><span class="w"> </span><span class="k">fn</span><span class="w"> </span><span class="nf">_to_array</span><span class="o"><</span><span class="n">T</span><span class="p">:</span><span class="w"> </span><span class="nb">Sized</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="nb">Copy</span><span class="o">></span><span class="p">(</span><span class="n">head</span><span class="p">:</span><span class="w"> </span><span class="nb">Option</span><span class="o"><&</span><span class="n">Rc</span><span class="o"><</span><span class="n">RefCell</span><span class="o"><</span><span class="n">ListNode</span><span class="o"><</span><span class="n">T</span><span class="o">>>>></span><span class="p">)</span><span class="w"> </span><span class="p">-></span><span class="w"> </span><span class="nb">Vec</span><span class="o"><</span><span class="n">T</span><span class="o">></span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-23-52" name="__codelineno-23-52" href="#__codelineno-23-52"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="kd">let</span><span class="w"> </span><span class="nb">Some</span><span class="p">(</span><span class="n">node</span><span class="p">)</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">head</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-23-53" name="__codelineno-23-53" href="#__codelineno-23-53"></a><span class="w"> </span><span class="kd">let</span><span class="w"> </span><span class="k">mut</span><span class="w"> </span><span class="n">nums</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">_to_array</span><span class="p">(</span><span class="n">node</span><span class="p">.</span><span class="n">borrow</span><span class="p">().</span><span class="n">next</span><span class="p">.</span><span class="n">as_ref</span><span class="p">());</span>
|
||||
<a id="__codelineno-23-54" name="__codelineno-23-54" href="#__codelineno-23-54"></a><span class="w"> </span><span class="n">nums</span><span class="p">.</span><span class="n">push</span><span class="p">(</span><span class="n">node</span><span class="p">.</span><span class="n">borrow</span><span class="p">().</span><span class="n">val</span><span class="p">);</span>
|
||||
<a id="__codelineno-23-55" name="__codelineno-23-55" href="#__codelineno-23-55"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">nums</span><span class="p">;</span>
|
||||
<a id="__codelineno-23-56" name="__codelineno-23-56" href="#__codelineno-23-56"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-23-57" name="__codelineno-23-57" href="#__codelineno-23-57"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="nb">Vec</span><span class="p">::</span><span class="n">new</span><span class="p">();</span>
|
||||
<a id="__codelineno-23-58" name="__codelineno-23-58" href="#__codelineno-23-58"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-23-59" name="__codelineno-23-59" href="#__codelineno-23-59"></a>
|
||||
<a id="__codelineno-23-60" name="__codelineno-23-60" href="#__codelineno-23-60"></a><span class="w"> </span><span class="n">_to_array</span><span class="p">(</span><span class="bp">self</span><span class="p">.</span><span class="n">peek</span><span class="p">())</span>
|
||||
<a id="__codelineno-23-61" name="__codelineno-23-61" href="#__codelineno-23-61"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-23-62" name="__codelineno-23-62" href="#__codelineno-23-62"></a><span class="p">}</span>
|
||||
</code></pre></div>
|
||||
</div>
|
||||
<div class="tabbed-block">
|
||||
|
||||
@@ -8,4 +8,4 @@ document$.subscribe(({ body }) => {
|
||||
],
|
||||
});
|
||||
});
|
||||
/*! update cache: 20250710071042 */
|
||||
/*! update cache: 20250710072253 */
|
||||
|
||||
@@ -15,4 +15,4 @@ window.MathJax = {
|
||||
document$.subscribe(() => {
|
||||
MathJax.typesetPromise();
|
||||
});
|
||||
/*! update cache: 20250710071042 */
|
||||
/*! update cache: 20250710072253 */
|
||||
|
||||
File diff suppressed because one or more lines are too long
Binary file not shown.
@@ -552,4 +552,4 @@ a:hover .text-button span {
|
||||
width: 100%;
|
||||
height: 100%;
|
||||
}
|
||||
/*! update cache: 20250710071042 */
|
||||
/*! update cache: 20250710072253 */
|
||||
|
||||
Reference in New Issue
Block a user