Given a linked list, swap every two adjacent nodes and return its head. For example,Given1->2->3->4, you should return the list as2->1->4->3. Your algorithm should use only constant space. You may not modify the values in the list, only…
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->1->4->3. Your algorithm should use only constant space. You may not modify the values in the list, on…
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->1->4->3. Your algorithm should use only constant space. You may not modify the values in the list, onl…
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->1->4->3. Your algorithm should use only constant space. You may not modify the v…
Given a linked list, swap every two adjacent nodes and return its head.   Example Given 1->2->3->4, you should return the list as 2->1->4->3. Challenge Your algorithm should use only constant space. You may not modify the values in the l…
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->1->4->3. Your algorithm should use only constant space. You may not modify the val…
Given a linked list, swap every two adjacent nodes and return its head. You may not modify the values in the list's nodes, only nodes itself may be changed. Example: Given 1->2->3->4, you should return the list as 2->1->4->3. 这道题不算难,是基本的…
Given a linked list, swap every two adjacent nodes and return its head. You may not modify the values in the list's nodes, only nodes itself may be changed. Example: Given ->->->, you should ->->->. 奇数位和偶数位互换,若是奇数个,不用管最后一个 解法一:(C++) List…
Given a linked list, swap every two adjacent nodes and return its head. Example: Given 1->2->3->4, you should return the list as 2->1->4->3. Note: Your algorithm should use only constant extra space. You may not modify the values in the…
这是LeetCode里的第24题. 题目要求: 给定一个链表,两两交换其中相邻的节点,并返回交换后的链表. 示例: 给定1->2->3->4, 你应该返回2->1->4->3. 说明: 你的算法只能使用常数的额外空间. 你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. 这道题还是很简单的,题目说明也很清晰.画画图就能完成题目了. 设计思路: 首先是判断链表是否为空(被空链表弄出了潜意识),然后两节点,一个front前节点,一个back后节点.再一个节点记录…