You are given annxn2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Follow up: Could you do this in-place? 分析: 二维数组a[n][n]顺时针旋转90度,要解决这个问题,无疑,第一件事儿就是找规律。 当n=1时,不用动了。 当n=2时, 旋转之后变为 有: a[0][0] =...
AI代码解释 classSolution:defrotate(self,matrix:List[List[int]])->None:""" Do notreturnanything,modify matrixin-place instead.""" n=len(matrix)# 注意一下范围和下标即可foriinrange(n//2):forjinrange(i,n-1-i):matrix[i][j],matrix[j][n-1-i],matrix[n-1-i][n-1-j],matrix[n-1...
classSolution:#@param matrix, a list of lists of integers#@return a list of lists of integersdefrotate(self, matrix):#思路2,时间复杂度O(n^2),空间复杂度O(1)n =len(matrix)foriinrange(n):forjinrange(n-i):#沿着副对角线反转matrix[i][j], matrix[n-1-j][n-1-i] = matrix[n-1-...
classSolution{public:voidrotate(vector<vector<int>>&matrix){int rownum=matrix.size();int colnum=matrix[0].size();// 将矩阵转置for(int i=0;i<rownum;i++){for(int j=0;j<i;j++){swap(matrix[i][j],matrix[j][i]);}}// 每一行对称翻转for(int i=0;i<rownum;i++){reverse(matrix[...
LeetCode Top 100 Liked Questions 48. Rotate Image (Java版; Medium) 题目描述 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....
LeetCode 48. Rotate Image n x n Rotate the image by 90 degrees (clockwise). Follow up: Could you do this in-place? class Solution { public: void rotate(vector<vector<int>>& matrix) { int length = matrix[0].size(); for(int i = 0; i < length / 2; i ++){...
48. Rotate Image 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. DO NOT allocate another 2D matrix and do the rotation. Example 1...
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 input 2D matrix directly.DO NOTallocate another 2D matrix and do the rotation. ...
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. DO NOT allocate another 2D matrix and do the rotation. ...
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. Example 1: Given input matrix = [ [1,2,3], [4,5,6], [7,8,9] ], ro...