Rotate Image You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Follow up: Could you do this in-place? 最简单的想法,两重循环. 第一重循环是对于矩阵的层次(从外到内) 第二重循环是对于每一层次的四元素轮换 举例: 1 2 3 4 5 6 7 8 9 最外层: 1-->3-->9-->7 2…

Difficulty:medium  More:[目录]LeetCode Java实现 Description https://leetcode.com/problems/rotate-image/ You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Note: You have to rotate the image in-place, which…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 日期 题目地址:https://leetcode.com/problems/rotate-image/description/ 题目描述 You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Note: Y…

[LeetCode]61. Rotate List 解题报告(Python) 标签(空格分隔): LeetCode 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.me/ 题目地址:https://leetcode.com/problems/rotate-list/description/ 题目描述: Given a linked list, rotate the list to the right by k places, where k…

一天一道LeetCode系列 (一)题目 You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Follow up: Could you do this in-place? (二)解题 90度旋转图像,我们不难看出 经过这样的变换后,图像就旋转了90度. class Solution { public: void rotate(vector<vecto…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 切片 递归 日期 题目地址:https://leetcode.com/problems/rotate-array/description/ 题目描述 Rotate an array of n elements to the right by k steps. For example, with n = 7 and k = 3, the array […

Rotate an array of n elements to the right by k steps. For example, with n = 7 and k = 3, the array [1,2,3,4,5,6,7] is rotated to [5,6,7,1,2,3,4]. Note:Try to come up as many solutions as you can, there are at least 3 different ways to solve this pro…

Sort Colors Given an array with n objects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red, white and blue. Here, we will use the integers 0, 1, and 2 to represent the color red, w…

Subsets II Given a collection of integers that might contain duplicates, S, return all possible subsets. Note: Elements in a subset must be in non-descending order. The solution set must not contain duplicate subsets. For example,If S = [1,2,2], a so…

Given a list, rotate the list to the right by k places, where k is non-negative. For example:Given 1->2->3->4->5->NULL and k = 2,return 4->5->1->2->3->NULL. /** * Definition for singly-linked list. * struct ListNode { * int v…