# -*- coding: utf8 -*-'''__author__ = 'dabay.wang@gmail.com' 48: Rotate Imagehttps://leetcode.com/problems/rotate-image/ You are given an n x n 2D matrix representing an image.Rotate the image by 90 degrees (clockwise).Could you do this in-place? ===…
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…
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…
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…
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? [题目解析] 这个题目的要求是把一个二维数组向右旋转九十度,就地实现. [思路1] 相比较矩阵的转置,矩阵的旋转有什么不同呢?看下面的例子: 1,2,3 1,3,2 1,2,3 2,3,1 3,2,1 ---…
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…
leetcode - 48. Rotate Image - Medium descrition 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 means you have to modify the input 2D matrix direct…
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 means you have to modify the input 2D matrix directly. DO NOT allocate another 2D matrix and do the…
[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…
Question 48. Rotate Image Solution 把这个二维数组(矩阵)看成一个一个环,循环每个环,循环每条边,每个边上的点进行旋转 public void rotate(int[][] matrix) { int n = matrix.length; for (int i = 0; i < n / 2; i++) { change(matrix, i); } } private void change(int[][] matrix, int i) { int n = mat…
leetcode python solution 1. two sum (easy) Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have exactly one solution. Example: Given nums = [2, 7, 11, 15],…
博客域名:http://www.xnerv.wang 原标题页:https://oj.leetcode.com/problems/rotate-image/ 题目类型:下标计算 难度评价:★★★ 本文地址:http://blog.csdn.net/nerv3x3/article/details/37968757 You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clock…
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? 题目标签:Array 这道题目给了我们一个n * n的矩阵,让我们旋转图片.题目要求in-place,所以就不能用额外的空间了.一开始自己写了一个很原始的方法,结果虽然通过,但是速度太慢.只好去看看别人的方法,看完觉得,自己…
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 […
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-string/description/ 题目描述 We are given two strings, A and B. A shift on A consists of taking string A and moving the leftmost charac…
1 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? 2 思路 使用辅助空间比较简单. 不使用辅助空间,想了半天,没想出来.. 看别人的代码,原来是要翻转两次.. 3 代码 public void rotate(int[][] matrix) { // 使用多余空间的…
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? 思路:事实上就是旋转数组.没有什么难度.代码例如以下: public class Solution { public void rotate(int[][] matrix) { int[][] a…
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 means you have to modify the input 2D matrix directly. DO NOT allocate another 2D matrix and do the…
题目大意:给一个矩阵,将其按顺时针旋转90°. 题目分析:通法是先将矩阵转置,然后再反转每一行,或者是先反转每一列,然后再将其转置.I just want to say"It's amazing!".(forgivig my poor English!) 代码如下(代码怎么写已经不重要了!): class Solution { public: void rotate(vector<vector<int>>& matrix) { int r=matrix.…
题目: 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 means you have to modify the input 2D matrix directly. DO NOT allocate another 2D matrix and do…
题目:矩阵旋转 难度:Medium 题目内容: 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 means you have to modify the input 2D matrix directly. DO NOT allocate anot…
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? 分析 本地使得二维矩阵,旋转90角度. 通过实际数据分析,通过两个步骤的元素交换可实现目标: 按照主对角线,将对称元素交换 按照列,将对称列元素全部交换 即可达到,使得二维矩阵,本地旋转90个角度. AC代码 cla…
作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址:https://leetcode.com/problems/rotate-function/description/ 题目描述: Given an array of integers A and let n to be its length. Assume Bk to be an array obtained by rotating the array A k positio…
#-*- coding: UTF-8 -*- #超时# lenA=len(A)# maxSum=[]# count=0# while count<lenA:# tmpSum=0# for i in xrange(lenA):# tmpSum+=i*A[i-count]# maxSum.append(tmpSum)# coun…
