Swapping Nodes in a Linked List * https://leetcode.com/problems/swapping-nodes-in-a-linked-list/ * You are given the head of a linked list, and an integer k. Return the head of the linked list after swapping the values of the kth node from the beginning and the kth node from the...
[LeetCode] 1721. Swapping Nodes in a Linked List You are given theheadof a linked list, and an integerk. Returnthe head of the linked list after swapping the values of thekthnode from the beginning and thekthnode from the end (the list is 1-indexed). Example 1: Input: head = [1...
先寻找出正数第k个节点和倒数第k个节点,然后交换二者的值,间接实现了交换节点的目的。 代码: class Solution { public ListNode swapNodes(ListNode head, int k) { ListNode A = head; //正数第k个节点A ListNode B = head; //倒数第k个节点B ListNode nodeK; //用来保存正数第k个节点A // step1: ...
[LeetCode] 1721. Swapping Nodes in a Linked List You are given theheadof a linked list, and an integerk. Returnthe head of the linked list after swapping the values of thekthnode from the beginning and thekthnode from the end (the list is 1-indexed). Example 1: Input: head = [1...
Return the head of the linked list after swapping the values of the kth node from the beginning and the kth node from the end (the list is 1-indexed).Example 1:Input: head = [1,2,3,4,5], k = 2 Output: [1,4,3,2,5] Example...
void swapNodes(Node* i, Node* j) { if(i->left) i->left->right = j; if(j->left) j->left->right = i; if(i->right) i->right->left= j; if(j->right) j->right->left= i; std::swap(i->left, j->left) std::swap(i->right, j->right) } ...
想要换一个平台了,这里没有tag功能。 上次做这个题还是python one-pass solution就是用两个指针,找到两个node直接交换val即可 如果题目要求必须实现node的交换,则需要找到两个node的前一个node,进行swap 需要特殊判断两个node相邻的情况 /** * Definition for singly-linked list. ...
1721. Swapping Nodes in a Linked List You are given the head of a linked list, and an integer k. Return the head of the linked list after swapping the values of the kth node from the begin linked list i++ 程序 转载 mb5fed6fc050005 2021-03-15 03:51:00 56阅读 2评论 ...
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