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27 lines
672 B
HTML
27 lines
672 B
HTML
<p>Write code to remove duplicates from an unsorted linked list.</p>
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<p><strong>Example1:</strong></p>
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<pre>
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<strong> Input</strong>: [1, 2, 3, 3, 2, 1]
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<strong> Output</strong>: [1, 2, 3]
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</pre>
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<p><strong>Example2:</strong></p>
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<pre>
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<strong> Input</strong>: [1, 1, 1, 1, 2]
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<strong> Output</strong>: [1, 2]
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</pre>
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<p><strong>Note: </strong></p>
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<ol>
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<li>The length of the list is within the range[0, 20000].</li>
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<li>The values of the list elements are within the range [0, 20000].</li>
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</ol>
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<p><strong>Follow Up: </strong></p>
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<p>How would you solve this problem if a temporary buffer is not allowed?</p>
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