[LeetCode] Swap Nodes in Pairs
Given a linked list, swap every two adjacent nodes and return its head. For example,Given 1->2->3->4, you should return the list as 2-> ...
原文：Swap Nodes in Pairs
問題：交換相鄰的兩個結點分析：建立新鏈表每次插入ret gt next后在插入ret，需要在判斷下若最后只有一個結點不需要交換，注意每次交換了結點要把尾結點的下一個指向空 class Solution public: ListNode swapPairs ListNode head if head NULL head gt next NULL return head ListNode helper ...
2014-08-02 17:32 0 3204 推薦指數：
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原題地址：http://oj.leetcode.com/problems/swap-nodes-in-pairs/ 題意：將鏈表中的節點兩兩交換。Given 1->2->3->4, you should return the list as 2->1->4-> ...
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