matrix[i], matrix[n - 1 - i] = matrix[n - 1 - i], matrix[i] for i in range(1,n): #Begin with '1' instead of 0 can avoide action on main-diagonal for j in range(i): #沿着主对角线翻转; matrix[i][j], matrix[j][i] = matrix[j][i], matrix[i][j] return matrix""...
所以这里需要引入一个临时变量temp就可以解决这4个数的顺时针交换,如: inttemp =matrix[i][j]; matrix[i][j]= matrix[n-1-j][i]; matrix[n-1-j][i] = matrix[n-1-i][n-1-j]; matrix[n-1-i][n-1-j] = matrix[j][n-1-i]; matrix[j][n-1-i] = temp; 把焦点放在一个元素上,...
Rotate the image by 90 degrees (clockwise). Follow up: Could you do this in-place? class Solution { public: void rotate(vector<vector<int> > &matrix) { //方法1:tempMatrix[j][n-1-i] = matrix[i][j]; 置换 //方法2:先对角线翻转,再中间线上下翻转 int n,i,j,temp; n=matrix.size...
题出自https://leetcode.com/problems/rotate-image/ 内容为: You are given annxn2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Follow up: Could you do this in-place? 简单的说就是给出一个n*n的二维数组,然后把这个数组进行90度顺时针旋转,而且不能使用额外的存储空间。
matrix[i].length == n 1 <= n <= 20 -1000 <= matrix[i][j] <= 1000 Rotate Image Medium 4990343Add to ListShare You are given annxn2Dmatrixrepresenting an image, rotate the image by 90 degrees (clockwise). You have to rotate the imagein-place, which means you have to modify the...
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 rotation. Example1: Given input matrix = [ [1,2,3], [4,5,6], [7,8,9] ], rota...
LeetCode Question Rotate Image Deion: You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). You have to rotate the image in-place, which means you have to modify the input 2D matrix directly. ...
LeetCode第48题:Rotate Image的解题思路是什么? 在LeetCode 48题中,如何实现图像的顺时针旋转90度? Problem 代码语言:javascript 代码运行次数:0 运行 AI代码解释 # You are given an n x n 2D matrix representing an image. # # Rotate the image by 90 degrees (clockwise). # # Note: # You have ...
[Leetcode] Rotate Image 旋转图片 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? 交换法 复杂度 时间O(NN) 空间 O(1) 思路
[LeetCode] Rotate Image 旋转图像 You are given annxn2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Follow up: Could you do this in-place? 在计算机图像处理里,旋转图片是很常见的,由于图片的本质是二维数组,所以也就变成了对数组的操作处理,翻转的本质就是某个位置上...