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krahets
2023-04-14 04:01:48 +08:00
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<div class="highlight"><span class="filename">hashing_search.cpp</span><pre><span></span><code><a id="__codelineno-11-1" name="__codelineno-11-1" href="#__codelineno-11-1"></a><span class="cm">/* 哈希查找（链表） */</span>
<a id="__codelineno-11-2" name="__codelineno-11-2" href="#__codelineno-11-2"></a><span class="n">ListNode</span><span class="o">*</span><span class="w"> </span><span class="nf">hashingSearchLinkedList</span><span class="p">(</span><span class="n">unordered_map</span><span class="o">&lt;</span><span class="kt">int</span><span class="p">,</span><span class="w"> </span><span class="n">ListNode</span><span class="o">*&gt;</span><span class="w"> </span><span class="n">map</span><span class="p">,</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">target</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-11-2" name="__codelineno-11-2" href="#__codelineno-11-2"></a><span class="n">ListNode</span><span class="w"> </span><span class="o">*</span><span class="nf">hashingSearchLinkedList</span><span class="p">(</span><span class="n">unordered_map</span><span class="o">&lt;</span><span class="kt">int</span><span class="p">,</span><span class="w"> </span><span class="n">ListNode</span><span class="w"> </span><span class="o">*&gt;</span><span class="w"> </span><span class="n">map</span><span class="p">,</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">target</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<a id="__codelineno-11-3" name="__codelineno-11-3" href="#__codelineno-11-3"></a><span class="w"> </span><span class="c1">// 哈希表的 key: 目标节点值，value: 节点对象</span>
<a id="__codelineno-11-4" name="__codelineno-11-4" href="#__codelineno-11-4"></a><span class="w"> </span><span class="c1">// 若哈希表中无此 key ，返回 nullptr</span>
<a id="__codelineno-11-5" name="__codelineno-11-5" href="#__codelineno-11-5"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">map</span><span class="p">.</span><span class="n">find</span><span class="p">(</span><span class="n">target</span><span class="p">)</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n">map</span><span class="p">.</span><span class="n">end</span><span class="p">())</span>