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"translatedContent": "<p>给定一个单链表 <code>L</code><em> </em>的头节点 <code>head</code> ,单链表 <code>L</code> 表示为:</p>\n\n<p><code>&nbsp;L<sub>0&nbsp;</sub>&rarr; L<sub>1&nbsp;</sub>&rarr; &hellip; &rarr; L<sub>n-1&nbsp;</sub>&rarr; L<sub>n&nbsp;</sub></code><br />\n请将其重新排列后变为</p>\n\n<p><code>L<sub>0&nbsp;</sub>&rarr;&nbsp;L<sub>n&nbsp;</sub>&rarr;&nbsp;L<sub>1&nbsp;</sub>&rarr;&nbsp;L<sub>n-1&nbsp;</sub>&rarr;&nbsp;L<sub>2&nbsp;</sub>&rarr;&nbsp;L<sub>n-2&nbsp;</sub>&rarr; &hellip;</code></p>\n\n<p>不能只是单纯的改变节点内部的值,而是需要实际的进行节点交换。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1:</strong></p>\n\n<p><img alt=\"\" src=\"https://pic.leetcode-cn.com/1626420311-PkUiGI-image.png\" style=\"width: 240px; \" /></p>\n\n<pre>\n<strong>输入: </strong>head = [1,2,3,4]\n<strong>输出: </strong>[1,4,2,3]</pre>\n\n<p><strong>示例 2:</strong></p>\n\n<p><img alt=\"\" src=\"https://pic.leetcode-cn.com/1626420320-YUiulT-image.png\" style=\"width: 320px; \" /></p>\n\n<pre>\n<strong>输入: </strong>head = [1,2,3,4,5]\n<strong>输出: </strong>[1,5,2,4,3]</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示:</strong></p>\n\n<ul>\n\t<li>链表的长度范围为 <code>[1, 5 * 10<sup>4</sup>]</code></li>\n\t<li><code>1 &lt;= node.val &lt;= 1000</code></li>\n</ul>\n\n<p>&nbsp;</p>\n\n<p><meta charset=\"UTF-8\" />注意:本题与主站 143&nbsp;题相同:<a href=\"https://leetcode-cn.com/problems/reorder-list/\">https://leetcode-cn.com/problems/reorder-list/</a>&nbsp;</p>\n",
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