leetcode-problemset/leetcode-cn/originData/LGjMqU.json

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            "questionId": "1000262",
            "questionFrontendId": "剑指 Offer II 026",
            "categoryTitle": "LCOF2",
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            "title": "重排链表",
            "titleSlug": "LGjMqU",
            "content": "<p>English description is not available for the problem. Please switch to Chinese.</p>\n",
            "translatedTitle": "重排链表",
            "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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                    "code": "# Definition for singly-linked list.\n# class ListNode:\n#     def __init__(self, val=0, next=None):\n#         self.val = val\n#         self.next = next\nclass Solution:\n    def reorderList(self, head: ListNode) -> None:\n        \"\"\"\n        Do not return anything, modify head in-place instead.\n        \"\"\"",
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