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krahets
2026-07-19 03:42:14 +08:00
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commit dbb2fc1d75
656 changed files with 590096 additions and 1010 deletions
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+420
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@@ -717,6 +717,8 @@
@@ -911,6 +913,34 @@
<li class="md-nav__item">
<a href="../../chapter_computational_complexity/exercises/" class="md-nav__link">
<span class="md-ellipsis">
2.6 &nbsp; 练习
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<li class="md-nav__item">
<a href="../../chapter_data_structure/exercises/" class="md-nav__link">
<span class="md-ellipsis">
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@@ -1159,6 +1219,8 @@
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<li class="md-nav__item">
<a href="../../chapter_array_and_linkedlist/exercises/" class="md-nav__link">
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4.6 &nbsp; 练习
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<li class="md-nav__item">
<a href="../../chapter_stack_and_queue/exercises/" class="md-nav__link">
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@@ -1571,6 +1691,8 @@
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<li class="md-nav__item">
<a href="../exercises/" class="md-nav__link">
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<a href="../../chapter_tree/exercises/" class="md-nav__link">
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<a href="../../chapter_heap/exercises/" class="md-nav__link">
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15.6 &nbsp; 练习
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+429 -9
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@@ -717,6 +717,8 @@
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<li class="md-nav__item">
<a href="../../chapter_computational_complexity/exercises/" class="md-nav__link">
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2.6 &nbsp; 练习
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3.6 &nbsp; 练习
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<a href="../../chapter_array_and_linkedlist/exercises/" class="md-nav__link">
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4.6 &nbsp; 练习
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@@ -1378,6 +1468,8 @@
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<li class="md-nav__item">
<a href="../../chapter_stack_and_queue/exercises/" class="md-nav__link">
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5.5 &nbsp; 练习
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@@ -1571,6 +1691,8 @@
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<li class="md-nav__item">
<a href="../exercises/" class="md-nav__link">
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6.5 &nbsp; 练习
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<a href="../../chapter_tree/exercises/" class="md-nav__link">
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<a href="../../chapter_heap/exercises/" class="md-nav__link">
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<li class="md-nav__item">
<a href="../../chapter_searching/exercises/" class="md-nav__link">
<span class="md-ellipsis">
10.7 &nbsp; 练习
</span>
</a>
</li>
</ul>
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<a href="../../chapter_sorting/exercises/" class="md-nav__link">
<span class="md-ellipsis">
11.12 &nbsp; 练习
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<a href="../../chapter_divide_and_conquer/exercises/" class="md-nav__link">
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12.6 &nbsp; 练习
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<a href="../../chapter_backtracking/exercises/" class="md-nav__link">
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13.6 &nbsp; 练习
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<a href="../../chapter_dynamic_programming/exercises/" class="md-nav__link">
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14.8 &nbsp; 练习
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<a href="../../chapter_greedy/exercises/" class="md-nav__link">
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15.6 &nbsp; 练习
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@@ -6161,13 +6581,13 @@
<a id="__codelineno-14-10" name="__codelineno-14-10" href="#__codelineno-14-10"></a>
<a id="__codelineno-14-11" name="__codelineno-14-11" href="#__codelineno-14-11"></a><span class="w"> </span><span class="k">public</span><span class="o">:</span>
<a id="__codelineno-14-12" name="__codelineno-14-12" href="#__codelineno-14-12"></a><span class="w"> </span><span class="cm">/* 构造方法 */</span>
<a id="__codelineno-14-13" name="__codelineno-14-13" href="#__codelineno-14-13"></a><span class="w"> </span><span class="n">HashMapOpenAddressing</span><span class="p">()</span><span class="w"> </span><span class="o">:</span><span class="w"> </span><span class="n">size</span><span class="p">(</span><span class="mi">0</span><span class="p">),</span><span class="w"> </span><span class="n">buckets</span><span class="p">(</span><span class="n">capacity</span><span class="p">,</span><span class="w"> </span><span class="k">nullptr</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-13" name="__codelineno-14-13" href="#__codelineno-14-13"></a><span class="w"> </span><span class="n">HashMapOpenAddressing</span><span class="p">()</span><span class="w"> </span><span class="o">:</span><span class="w"> </span><span class="n">size</span><span class="p">(</span><span class="mi">0</span><span class="p">),</span><span class="w"> </span><span class="n">buckets</span><span class="p">(</span><span class="n">capacity</span><span class="p">,</span><span class="w"> </span><span class="nb">nullptr</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-14" name="__codelineno-14-14" href="#__codelineno-14-14"></a><span class="w"> </span><span class="p">}</span>
<a id="__codelineno-14-15" name="__codelineno-14-15" href="#__codelineno-14-15"></a>
<a id="__codelineno-14-16" name="__codelineno-14-16" href="#__codelineno-14-16"></a><span class="w"> </span><span class="cm">/* 析构方法 */</span>
<a id="__codelineno-14-17" name="__codelineno-14-17" href="#__codelineno-14-17"></a><span class="w"> </span><span class="o">~</span><span class="n">HashMapOpenAddressing</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-18" name="__codelineno-14-18" href="#__codelineno-14-18"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="n">Pair</span><span class="w"> </span><span class="o">*</span><span class="n">pair</span><span class="w"> </span><span class="o">:</span><span class="w"> </span><span class="n">buckets</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-19" name="__codelineno-14-19" href="#__codelineno-14-19"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">pair</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="k">nullptr</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">pair</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">TOMBSTONE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-19" name="__codelineno-14-19" href="#__codelineno-14-19"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">pair</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="nb">nullptr</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">pair</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">TOMBSTONE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-20" name="__codelineno-14-20" href="#__codelineno-14-20"></a><span class="w"> </span><span class="k">delete</span><span class="w"> </span><span class="n">pair</span><span class="p">;</span>
<a id="__codelineno-14-21" name="__codelineno-14-21" href="#__codelineno-14-21"></a><span class="w"> </span><span class="p">}</span>
<a id="__codelineno-14-22" name="__codelineno-14-22" href="#__codelineno-14-22"></a><span class="w"> </span><span class="p">}</span>
@@ -6189,7 +6609,7 @@
<a id="__codelineno-14-38" name="__codelineno-14-38" href="#__codelineno-14-38"></a><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">index</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">hashFunc</span><span class="p">(</span><span class="n">key</span><span class="p">);</span>
<a id="__codelineno-14-39" name="__codelineno-14-39" href="#__codelineno-14-39"></a><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">firstTombstone</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-14-40" name="__codelineno-14-40" href="#__codelineno-14-40"></a><span class="w"> </span><span class="c1">// 线性探测,当遇到空桶时跳出</span>
<a id="__codelineno-14-41" name="__codelineno-14-41" href="#__codelineno-14-41"></a><span class="w"> </span><span class="k">while</span><span class="w"> </span><span class="p">(</span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="k">nullptr</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-41" name="__codelineno-14-41" href="#__codelineno-14-41"></a><span class="w"> </span><span class="k">while</span><span class="w"> </span><span class="p">(</span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="nb">nullptr</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-42" name="__codelineno-14-42" href="#__codelineno-14-42"></a><span class="w"> </span><span class="c1">// 若遇到 key ,返回对应的桶索引</span>
<a id="__codelineno-14-43" name="__codelineno-14-43" href="#__codelineno-14-43"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="o">-&gt;</span><span class="n">key</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n">key</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-44" name="__codelineno-14-44" href="#__codelineno-14-44"></a><span class="w"> </span><span class="c1">// 若之前遇到了删除标记,则将键值对移动至该索引处</span>
@@ -6216,7 +6636,7 @@
<a id="__codelineno-14-65" name="__codelineno-14-65" href="#__codelineno-14-65"></a><span class="w"> </span><span class="c1">// 搜索 key 对应的桶索引</span>
<a id="__codelineno-14-66" name="__codelineno-14-66" href="#__codelineno-14-66"></a><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">index</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">findBucket</span><span class="p">(</span><span class="n">key</span><span class="p">);</span>
<a id="__codelineno-14-67" name="__codelineno-14-67" href="#__codelineno-14-67"></a><span class="w"> </span><span class="c1">// 若找到键值对,则返回对应 val</span>
<a id="__codelineno-14-68" name="__codelineno-14-68" href="#__codelineno-14-68"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="k">nullptr</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">TOMBSTONE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-68" name="__codelineno-14-68" href="#__codelineno-14-68"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="nb">nullptr</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">TOMBSTONE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-69" name="__codelineno-14-69" href="#__codelineno-14-69"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="o">-&gt;</span><span class="n">val</span><span class="p">;</span>
<a id="__codelineno-14-70" name="__codelineno-14-70" href="#__codelineno-14-70"></a><span class="w"> </span><span class="p">}</span>
<a id="__codelineno-14-71" name="__codelineno-14-71" href="#__codelineno-14-71"></a><span class="w"> </span><span class="c1">// 若键值对不存在,则返回空字符串</span>
@@ -6232,7 +6652,7 @@
<a id="__codelineno-14-81" name="__codelineno-14-81" href="#__codelineno-14-81"></a><span class="w"> </span><span class="c1">// 搜索 key 对应的桶索引</span>
<a id="__codelineno-14-82" name="__codelineno-14-82" href="#__codelineno-14-82"></a><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">index</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">findBucket</span><span class="p">(</span><span class="n">key</span><span class="p">);</span>
<a id="__codelineno-14-83" name="__codelineno-14-83" href="#__codelineno-14-83"></a><span class="w"> </span><span class="c1">// 若找到键值对,则覆盖 val 并返回</span>
<a id="__codelineno-14-84" name="__codelineno-14-84" href="#__codelineno-14-84"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="k">nullptr</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">TOMBSTONE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-84" name="__codelineno-14-84" href="#__codelineno-14-84"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="nb">nullptr</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">TOMBSTONE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-85" name="__codelineno-14-85" href="#__codelineno-14-85"></a><span class="w"> </span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="o">-&gt;</span><span class="n">val</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">val</span><span class="p">;</span>
<a id="__codelineno-14-86" name="__codelineno-14-86" href="#__codelineno-14-86"></a><span class="w"> </span><span class="k">return</span><span class="p">;</span>
<a id="__codelineno-14-87" name="__codelineno-14-87" href="#__codelineno-14-87"></a><span class="w"> </span><span class="p">}</span>
@@ -6246,7 +6666,7 @@
<a id="__codelineno-14-95" name="__codelineno-14-95" href="#__codelineno-14-95"></a><span class="w"> </span><span class="c1">// 搜索 key 对应的桶索引</span>
<a id="__codelineno-14-96" name="__codelineno-14-96" href="#__codelineno-14-96"></a><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">index</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">findBucket</span><span class="p">(</span><span class="n">key</span><span class="p">);</span>
<a id="__codelineno-14-97" name="__codelineno-14-97" href="#__codelineno-14-97"></a><span class="w"> </span><span class="c1">// 若找到键值对,则用删除标记覆盖它</span>
<a id="__codelineno-14-98" name="__codelineno-14-98" href="#__codelineno-14-98"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="k">nullptr</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">TOMBSTONE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-98" name="__codelineno-14-98" href="#__codelineno-14-98"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="nb">nullptr</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">TOMBSTONE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-99" name="__codelineno-14-99" href="#__codelineno-14-99"></a><span class="w"> </span><span class="k">delete</span><span class="w"> </span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">];</span>
<a id="__codelineno-14-100" name="__codelineno-14-100" href="#__codelineno-14-100"></a><span class="w"> </span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">TOMBSTONE</span><span class="p">;</span>
<a id="__codelineno-14-101" name="__codelineno-14-101" href="#__codelineno-14-101"></a><span class="w"> </span><span class="n">size</span><span class="o">--</span><span class="p">;</span>
@@ -6259,11 +6679,11 @@
<a id="__codelineno-14-108" name="__codelineno-14-108" href="#__codelineno-14-108"></a><span class="w"> </span><span class="n">vector</span><span class="o">&lt;</span><span class="n">Pair</span><span class="w"> </span><span class="o">*&gt;</span><span class="w"> </span><span class="n">bucketsTmp</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">buckets</span><span class="p">;</span>
<a id="__codelineno-14-109" name="__codelineno-14-109" href="#__codelineno-14-109"></a><span class="w"> </span><span class="c1">// 初始化扩容后的新哈希表</span>
<a id="__codelineno-14-110" name="__codelineno-14-110" href="#__codelineno-14-110"></a><span class="w"> </span><span class="n">capacity</span><span class="w"> </span><span class="o">*=</span><span class="w"> </span><span class="n">extendRatio</span><span class="p">;</span>
<a id="__codelineno-14-111" name="__codelineno-14-111" href="#__codelineno-14-111"></a><span class="w"> </span><span class="n">buckets</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">vector</span><span class="o">&lt;</span><span class="n">Pair</span><span class="w"> </span><span class="o">*&gt;</span><span class="p">(</span><span class="n">capacity</span><span class="p">,</span><span class="w"> </span><span class="k">nullptr</span><span class="p">);</span>
<a id="__codelineno-14-111" name="__codelineno-14-111" href="#__codelineno-14-111"></a><span class="w"> </span><span class="n">buckets</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">vector</span><span class="o">&lt;</span><span class="n">Pair</span><span class="w"> </span><span class="o">*&gt;</span><span class="p">(</span><span class="n">capacity</span><span class="p">,</span><span class="w"> </span><span class="nb">nullptr</span><span class="p">);</span>
<a id="__codelineno-14-112" name="__codelineno-14-112" href="#__codelineno-14-112"></a><span class="w"> </span><span class="n">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-14-113" name="__codelineno-14-113" href="#__codelineno-14-113"></a><span class="w"> </span><span class="c1">// 将键值对从原哈希表搬运至新哈希表</span>
<a id="__codelineno-14-114" name="__codelineno-14-114" href="#__codelineno-14-114"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="n">Pair</span><span class="w"> </span><span class="o">*</span><span class="n">pair</span><span class="w"> </span><span class="o">:</span><span class="w"> </span><span class="n">bucketsTmp</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-115" name="__codelineno-14-115" href="#__codelineno-14-115"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">pair</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="k">nullptr</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">pair</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">TOMBSTONE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-115" name="__codelineno-14-115" href="#__codelineno-14-115"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">pair</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="nb">nullptr</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">pair</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="n">TOMBSTONE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-116" name="__codelineno-14-116" href="#__codelineno-14-116"></a><span class="w"> </span><span class="n">put</span><span class="p">(</span><span class="n">pair</span><span class="o">-&gt;</span><span class="n">key</span><span class="p">,</span><span class="w"> </span><span class="n">pair</span><span class="o">-&gt;</span><span class="n">val</span><span class="p">);</span>
<a id="__codelineno-14-117" name="__codelineno-14-117" href="#__codelineno-14-117"></a><span class="w"> </span><span class="k">delete</span><span class="w"> </span><span class="n">pair</span><span class="p">;</span>
<a id="__codelineno-14-118" name="__codelineno-14-118" href="#__codelineno-14-118"></a><span class="w"> </span><span class="p">}</span>
@@ -6273,7 +6693,7 @@
<a id="__codelineno-14-122" name="__codelineno-14-122" href="#__codelineno-14-122"></a><span class="w"> </span><span class="cm">/* 打印哈希表 */</span>
<a id="__codelineno-14-123" name="__codelineno-14-123" href="#__codelineno-14-123"></a><span class="w"> </span><span class="kt">void</span><span class="w"> </span><span class="n">print</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-124" name="__codelineno-14-124" href="#__codelineno-14-124"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="n">Pair</span><span class="w"> </span><span class="o">*</span><span class="n">pair</span><span class="w"> </span><span class="o">:</span><span class="w"> </span><span class="n">buckets</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-125" name="__codelineno-14-125" href="#__codelineno-14-125"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">pair</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="k">nullptr</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-125" name="__codelineno-14-125" href="#__codelineno-14-125"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">pair</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="nb">nullptr</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-126" name="__codelineno-14-126" href="#__codelineno-14-126"></a><span class="w"> </span><span class="n">cout</span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="w"> </span><span class="s">&quot;nullptr&quot;</span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="w"> </span><span class="n">endl</span><span class="p">;</span>
<a id="__codelineno-14-127" name="__codelineno-14-127" href="#__codelineno-14-127"></a><span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">pair</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n">TOMBSTONE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-14-128" name="__codelineno-14-128" href="#__codelineno-14-128"></a><span class="w"> </span><span class="n">cout</span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="w"> </span><span class="s">&quot;TOMBSTONE&quot;</span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="w"> </span><span class="n">endl</span><span class="p">;</span>
+425 -5
View File
@@ -717,6 +717,8 @@
@@ -911,6 +913,34 @@
<li class="md-nav__item">
<a href="../../chapter_computational_complexity/exercises/" class="md-nav__link">
<span class="md-ellipsis">
2.6 &nbsp; 练习
</span>
</a>
</li>
</ul>
</nav>
@@ -938,6 +968,8 @@
@@ -1132,6 +1164,34 @@
<li class="md-nav__item">
<a href="../../chapter_data_structure/exercises/" class="md-nav__link">
<span class="md-ellipsis">
3.6 &nbsp; 练习
</span>
</a>
</li>
</ul>
</nav>
@@ -1159,6 +1219,8 @@
@@ -1353,6 +1415,34 @@
<li class="md-nav__item">
<a href="../../chapter_array_and_linkedlist/exercises/" class="md-nav__link">
<span class="md-ellipsis">
4.6 &nbsp; 练习
</span>
</a>
</li>
</ul>
</nav>
@@ -1378,6 +1468,8 @@
@@ -1544,6 +1636,34 @@
<li class="md-nav__item">
<a href="../../chapter_stack_and_queue/exercises/" class="md-nav__link">
<span class="md-ellipsis">
5.5 &nbsp; 练习
</span>
</a>
</li>
</ul>
</nav>
@@ -1571,6 +1691,8 @@
@@ -1818,6 +1940,34 @@
<li class="md-nav__item">
<a href="../exercises/" class="md-nav__link">
<span class="md-ellipsis">
6.5 &nbsp; 练习
</span>
</a>
</li>
</ul>
</nav>
@@ -1847,6 +1997,8 @@
@@ -2069,6 +2221,34 @@
<li class="md-nav__item">
<a href="../../chapter_tree/exercises/" class="md-nav__link">
<span class="md-ellipsis">
7.7 &nbsp; 练习
</span>
</a>
</li>
</ul>
</nav>
@@ -2094,6 +2274,8 @@
@@ -2260,6 +2442,34 @@
<li class="md-nav__item">
<a href="../../chapter_heap/exercises/" class="md-nav__link">
<span class="md-ellipsis">
8.5 &nbsp; 练习
</span>
</a>
</li>
</ul>
</nav>
@@ -2285,6 +2495,8 @@
@@ -2451,6 +2663,34 @@
<li class="md-nav__item">
<a href="../../chapter_graph/exercises/" class="md-nav__link">
<span class="md-ellipsis">
9.5 &nbsp; 练习
</span>
</a>
</li>
</ul>
</nav>
@@ -2480,6 +2720,8 @@
@@ -2702,6 +2944,34 @@
<li class="md-nav__item">
<a href="../../chapter_searching/exercises/" class="md-nav__link">
<span class="md-ellipsis">
10.7 &nbsp; 练习
</span>
</a>
</li>
</ul>
</nav>
@@ -2741,6 +3011,8 @@
@@ -3103,6 +3375,34 @@
<li class="md-nav__item">
<a href="../../chapter_sorting/exercises/" class="md-nav__link">
<span class="md-ellipsis">
11.12 &nbsp; 练习
</span>
</a>
</li>
</ul>
</nav>
@@ -3130,6 +3430,8 @@
@@ -3324,6 +3626,34 @@
<li class="md-nav__item">
<a href="../../chapter_divide_and_conquer/exercises/" class="md-nav__link">
<span class="md-ellipsis">
12.6 &nbsp; 练习
</span>
</a>
</li>
</ul>
</nav>
@@ -3351,6 +3681,8 @@
@@ -3545,6 +3877,34 @@
<li class="md-nav__item">
<a href="../../chapter_backtracking/exercises/" class="md-nav__link">
<span class="md-ellipsis">
13.6 &nbsp; 练习
</span>
</a>
</li>
</ul>
</nav>
@@ -3576,6 +3936,8 @@
@@ -3826,6 +4188,34 @@
<li class="md-nav__item">
<a href="../../chapter_dynamic_programming/exercises/" class="md-nav__link">
<span class="md-ellipsis">
14.8 &nbsp; 练习
</span>
</a>
</li>
</ul>
</nav>
@@ -3853,6 +4243,8 @@
@@ -4047,6 +4439,34 @@
<li class="md-nav__item">
<a href="../../chapter_greedy/exercises/" class="md-nav__link">
<span class="md-ellipsis">
15.6 &nbsp; 练习
</span>
</a>
</li>
</ul>
</nav>
@@ -5101,7 +5521,7 @@
<a id="__codelineno-28-38" name="__codelineno-28-38" href="#__codelineno-28-38"></a><span class="w"> </span><span class="n">string</span><span class="w"> </span><span class="n">get</span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">key</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-28-39" name="__codelineno-28-39" href="#__codelineno-28-39"></a><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">index</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">hashFunc</span><span class="p">(</span><span class="n">key</span><span class="p">);</span>
<a id="__codelineno-28-40" name="__codelineno-28-40" href="#__codelineno-28-40"></a><span class="w"> </span><span class="n">Pair</span><span class="w"> </span><span class="o">*</span><span class="n">pair</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">];</span>
<a id="__codelineno-28-41" name="__codelineno-28-41" href="#__codelineno-28-41"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">pair</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="k">nullptr</span><span class="p">)</span>
<a id="__codelineno-28-41" name="__codelineno-28-41" href="#__codelineno-28-41"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">pair</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="nb">nullptr</span><span class="p">)</span>
<a id="__codelineno-28-42" name="__codelineno-28-42" href="#__codelineno-28-42"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="s">&quot;&quot;</span><span class="p">;</span>
<a id="__codelineno-28-43" name="__codelineno-28-43" href="#__codelineno-28-43"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">pair</span><span class="o">-&gt;</span><span class="n">val</span><span class="p">;</span>
<a id="__codelineno-28-44" name="__codelineno-28-44" href="#__codelineno-28-44"></a><span class="w"> </span><span class="p">}</span>
@@ -5118,14 +5538,14 @@
<a id="__codelineno-28-55" name="__codelineno-28-55" href="#__codelineno-28-55"></a><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">index</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">hashFunc</span><span class="p">(</span><span class="n">key</span><span class="p">);</span>
<a id="__codelineno-28-56" name="__codelineno-28-56" href="#__codelineno-28-56"></a><span class="w"> </span><span class="c1">// 释放内存并置为 nullptr</span>
<a id="__codelineno-28-57" name="__codelineno-28-57" href="#__codelineno-28-57"></a><span class="w"> </span><span class="k">delete</span><span class="w"> </span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">];</span>
<a id="__codelineno-28-58" name="__codelineno-28-58" href="#__codelineno-28-58"></a><span class="w"> </span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">nullptr</span><span class="p">;</span>
<a id="__codelineno-28-58" name="__codelineno-28-58" href="#__codelineno-28-58"></a><span class="w"> </span><span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nb">nullptr</span><span class="p">;</span>
<a id="__codelineno-28-59" name="__codelineno-28-59" href="#__codelineno-28-59"></a><span class="w"> </span><span class="p">}</span>
<a id="__codelineno-28-60" name="__codelineno-28-60" href="#__codelineno-28-60"></a>
<a id="__codelineno-28-61" name="__codelineno-28-61" href="#__codelineno-28-61"></a><span class="w"> </span><span class="cm">/* 获取所有键值对 */</span>
<a id="__codelineno-28-62" name="__codelineno-28-62" href="#__codelineno-28-62"></a><span class="w"> </span><span class="n">vector</span><span class="o">&lt;</span><span class="n">Pair</span><span class="w"> </span><span class="o">*&gt;</span><span class="w"> </span><span class="n">pairSet</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-28-63" name="__codelineno-28-63" href="#__codelineno-28-63"></a><span class="w"> </span><span class="n">vector</span><span class="o">&lt;</span><span class="n">Pair</span><span class="w"> </span><span class="o">*&gt;</span><span class="w"> </span><span class="n">pairSet</span><span class="p">;</span>
<a id="__codelineno-28-64" name="__codelineno-28-64" href="#__codelineno-28-64"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="n">Pair</span><span class="w"> </span><span class="o">*</span><span class="n">pair</span><span class="w"> </span><span class="o">:</span><span class="w"> </span><span class="n">buckets</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-28-65" name="__codelineno-28-65" href="#__codelineno-28-65"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">pair</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="k">nullptr</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-28-65" name="__codelineno-28-65" href="#__codelineno-28-65"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">pair</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="nb">nullptr</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-28-66" name="__codelineno-28-66" href="#__codelineno-28-66"></a><span class="w"> </span><span class="n">pairSet</span><span class="p">.</span><span class="n">push_back</span><span class="p">(</span><span class="n">pair</span><span class="p">);</span>
<a id="__codelineno-28-67" name="__codelineno-28-67" href="#__codelineno-28-67"></a><span class="w"> </span><span class="p">}</span>
<a id="__codelineno-28-68" name="__codelineno-28-68" href="#__codelineno-28-68"></a><span class="w"> </span><span class="p">}</span>
@@ -5136,7 +5556,7 @@
<a id="__codelineno-28-73" name="__codelineno-28-73" href="#__codelineno-28-73"></a><span class="w"> </span><span class="n">vector</span><span class="o">&lt;</span><span class="kt">int</span><span class="o">&gt;</span><span class="w"> </span><span class="n">keySet</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-28-74" name="__codelineno-28-74" href="#__codelineno-28-74"></a><span class="w"> </span><span class="n">vector</span><span class="o">&lt;</span><span class="kt">int</span><span class="o">&gt;</span><span class="w"> </span><span class="n">keySet</span><span class="p">;</span>
<a id="__codelineno-28-75" name="__codelineno-28-75" href="#__codelineno-28-75"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="n">Pair</span><span class="w"> </span><span class="o">*</span><span class="n">pair</span><span class="w"> </span><span class="o">:</span><span class="w"> </span><span class="n">buckets</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-28-76" name="__codelineno-28-76" href="#__codelineno-28-76"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">pair</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="k">nullptr</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-28-76" name="__codelineno-28-76" href="#__codelineno-28-76"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">pair</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="nb">nullptr</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-28-77" name="__codelineno-28-77" href="#__codelineno-28-77"></a><span class="w"> </span><span class="n">keySet</span><span class="p">.</span><span class="n">push_back</span><span class="p">(</span><span class="n">pair</span><span class="o">-&gt;</span><span class="n">key</span><span class="p">);</span>
<a id="__codelineno-28-78" name="__codelineno-28-78" href="#__codelineno-28-78"></a><span class="w"> </span><span class="p">}</span>
<a id="__codelineno-28-79" name="__codelineno-28-79" href="#__codelineno-28-79"></a><span class="w"> </span><span class="p">}</span>
@@ -5147,7 +5567,7 @@
<a id="__codelineno-28-84" name="__codelineno-28-84" href="#__codelineno-28-84"></a><span class="w"> </span><span class="n">vector</span><span class="o">&lt;</span><span class="n">string</span><span class="o">&gt;</span><span class="w"> </span><span class="n">valueSet</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-28-85" name="__codelineno-28-85" href="#__codelineno-28-85"></a><span class="w"> </span><span class="n">vector</span><span class="o">&lt;</span><span class="n">string</span><span class="o">&gt;</span><span class="w"> </span><span class="n">valueSet</span><span class="p">;</span>
<a id="__codelineno-28-86" name="__codelineno-28-86" href="#__codelineno-28-86"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="n">Pair</span><span class="w"> </span><span class="o">*</span><span class="n">pair</span><span class="w"> </span><span class="o">:</span><span class="w"> </span><span class="n">buckets</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-28-87" name="__codelineno-28-87" href="#__codelineno-28-87"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">pair</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="k">nullptr</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-28-87" name="__codelineno-28-87" href="#__codelineno-28-87"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">pair</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="nb">nullptr</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-28-88" name="__codelineno-28-88" href="#__codelineno-28-88"></a><span class="w"> </span><span class="n">valueSet</span><span class="p">.</span><span class="n">push_back</span><span class="p">(</span><span class="n">pair</span><span class="o">-&gt;</span><span class="n">val</span><span class="p">);</span>
<a id="__codelineno-28-89" name="__codelineno-28-89" href="#__codelineno-28-89"></a><span class="w"> </span><span class="p">}</span>
<a id="__codelineno-28-90" name="__codelineno-28-90" href="#__codelineno-28-90"></a><span class="w"> </span><span class="p">}</span>
+425 -4
View File
@@ -15,7 +15,7 @@
<link rel="canonical" href="https://www.hello-algo.com/chapter_hashing/">
<link rel="prev" href="../chapter_stack_and_queue/summary/">
<link rel="prev" href="../chapter_stack_and_queue/exercises/">
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@@ -717,6 +717,8 @@
@@ -911,6 +913,34 @@
<li class="md-nav__item">
<a href="../chapter_computational_complexity/exercises/" class="md-nav__link">
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2.6 &nbsp; 练习
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@@ -938,6 +968,8 @@
@@ -1132,6 +1164,34 @@
<li class="md-nav__item">
<a href="../chapter_data_structure/exercises/" class="md-nav__link">
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3.6 &nbsp; 练习
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@@ -1159,6 +1219,8 @@
@@ -1353,6 +1415,34 @@
<li class="md-nav__item">
<a href="../chapter_array_and_linkedlist/exercises/" class="md-nav__link">
<span class="md-ellipsis">
4.6 &nbsp; 练习
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<span class="md-ellipsis">
5.5 &nbsp; 练习
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@@ -1571,6 +1691,8 @@
@@ -1737,6 +1859,34 @@
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<a href="./exercises/" class="md-nav__link">
<span class="md-ellipsis">
6.5 &nbsp; 练习
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@@ -1766,6 +1916,8 @@
@@ -1988,6 +2140,34 @@
<li class="md-nav__item">
<a href="../chapter_tree/exercises/" class="md-nav__link">
<span class="md-ellipsis">
7.7 &nbsp; 练习
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@@ -2013,6 +2193,8 @@
@@ -2179,6 +2361,34 @@
<li class="md-nav__item">
<a href="../chapter_heap/exercises/" class="md-nav__link">
<span class="md-ellipsis">
8.5 &nbsp; 练习
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@@ -2204,6 +2414,8 @@
@@ -2370,6 +2582,34 @@
<li class="md-nav__item">
<a href="../chapter_graph/exercises/" class="md-nav__link">
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9.5 &nbsp; 练习
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@@ -2399,6 +2639,8 @@
@@ -2621,6 +2863,34 @@
<li class="md-nav__item">
<a href="../chapter_searching/exercises/" class="md-nav__link">
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10.7 &nbsp; 练习
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@@ -2660,6 +2930,8 @@
@@ -3022,6 +3294,34 @@
<li class="md-nav__item">
<a href="../chapter_sorting/exercises/" class="md-nav__link">
<span class="md-ellipsis">
11.12 &nbsp; 练习
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@@ -3049,6 +3349,8 @@
@@ -3243,6 +3545,34 @@
<li class="md-nav__item">
<a href="../chapter_divide_and_conquer/exercises/" class="md-nav__link">
<span class="md-ellipsis">
12.6 &nbsp; 练习
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@@ -3270,6 +3600,8 @@
@@ -3464,6 +3796,34 @@
<li class="md-nav__item">
<a href="../chapter_backtracking/exercises/" class="md-nav__link">
<span class="md-ellipsis">
13.6 &nbsp; 练习
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@@ -3495,6 +3855,8 @@
@@ -3745,6 +4107,34 @@
<li class="md-nav__item">
<a href="../chapter_dynamic_programming/exercises/" class="md-nav__link">
<span class="md-ellipsis">
14.8 &nbsp; 练习
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@@ -3772,6 +4162,8 @@
@@ -3966,6 +4358,34 @@
<li class="md-nav__item">
<a href="../chapter_greedy/exercises/" class="md-nav__link">
<span class="md-ellipsis">
15.6 &nbsp; 练习
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@@ -4362,6 +4782,7 @@
<li><a href="hash_collision/">6.2 &nbsp; 哈希冲突</a></li>
<li><a href="hash_algorithm/">6.3 &nbsp; 哈希算法</a></li>
<li><a href="summary/">6.4 &nbsp; 小结</a></li>
<li><a href="exercises/">6.5 &nbsp; 练习</a></li>
</ul>
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<a
href="../chapter_stack_and_queue/summary/"
href="../chapter_stack_and_queue/exercises/"
class="md-footer__link md-footer__link--prev"
aria-label="上一页: 5.4 &amp;nbsp; 小结"
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@@ -4397,7 +4818,7 @@ aria-label="页脚"
上一页
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5.4 &nbsp; 小结
5.5 &nbsp; 练习
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+424 -4
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@@ -18,7 +18,7 @@
<link rel="prev" href="../hash_algorithm/">
<link rel="next" href="../../chapter_tree/">
<link rel="next" href="../exercises/">
@@ -717,6 +717,8 @@
@@ -911,6 +913,34 @@
<li class="md-nav__item">
<a href="../../chapter_computational_complexity/exercises/" class="md-nav__link">
<span class="md-ellipsis">
2.6 &nbsp; 练习
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@@ -938,6 +968,8 @@
@@ -1132,6 +1164,34 @@
<li class="md-nav__item">
<a href="../../chapter_data_structure/exercises/" class="md-nav__link">
<span class="md-ellipsis">
3.6 &nbsp; 练习
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@@ -1159,6 +1219,8 @@
@@ -1353,6 +1415,34 @@
<li class="md-nav__item">
<a href="../../chapter_array_and_linkedlist/exercises/" class="md-nav__link">
<span class="md-ellipsis">
4.6 &nbsp; 练习
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@@ -1378,6 +1468,8 @@
@@ -1544,6 +1636,34 @@
<li class="md-nav__item">
<a href="../../chapter_stack_and_queue/exercises/" class="md-nav__link">
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5.5 &nbsp; 练习
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@@ -1571,6 +1691,8 @@
@@ -1807,6 +1929,34 @@
<li class="md-nav__item">
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6.5 &nbsp; 练习
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@@ -1836,6 +1986,8 @@
@@ -2058,6 +2210,34 @@
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<a href="../../chapter_tree/exercises/" class="md-nav__link">
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@@ -2083,6 +2263,8 @@
@@ -2249,6 +2431,34 @@
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@@ -2274,6 +2484,8 @@
@@ -2440,6 +2652,34 @@
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@@ -2469,6 +2709,8 @@
@@ -2691,6 +2933,34 @@
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<a href="../../chapter_searching/exercises/" class="md-nav__link">
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@@ -2730,6 +3000,8 @@
@@ -3092,6 +3364,34 @@
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@@ -3119,6 +3419,8 @@
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<li class="md-nav__item">
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13.6 &nbsp; 练习
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@@ -3565,6 +3925,8 @@
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