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add leetcode problem-cn part2

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小墨
2022-03-27 20:38:29 +08:00
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算法题（国内版）/problem (English)/回文链表(English) [palindrome-linked-list-lcci].html Normal file
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<p>Implement a function to check if a linked list is a palindrome.</p>
<p>&nbsp;</p>
<p><strong>Example 1: </strong></p>
<pre>
<strong>Input: </strong>1-&gt;2
<strong>Output: </strong> false
</pre>
<p><strong>Example 2: </strong></p>
<pre>
<strong>Input: </strong>1-&gt;2-&gt;2-&gt;1
<strong>Output: </strong> true
</pre>
<p>&nbsp;</p>
<p><b>Follow up:</b><br />
Could you do it in O(n) time and O(1) space?</p>