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27 lines
596 B
HTML
27 lines
596 B
HTML
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<p>编写代码，移除未排序链表中的重复节点。保留最开始出现的节点。</p>
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<p> <strong>示例1:</strong></p>
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<pre>
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<strong> 输入</strong>：[1, 2, 3, 3, 2, 1]
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<strong> 输出</strong>：[1, 2, 3]
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</pre>
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<p> <strong>示例2:</strong></p>
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<pre>
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<strong> 输入</strong>：[1, 1, 1, 1, 2]
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<strong> 输出</strong>：[1, 2]
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</pre>
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<p><strong>提示：</strong></p>
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<ol>
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<li>链表长度在[0, 20000]范围内。</li>
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<li>链表元素在[0, 20000]范围内。</li>
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</ol>
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<p> <strong>进阶：</strong></p>
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<p>如果不得使用临时缓冲区，该怎么解决？</p>
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