*clockwise rotate*first reverse up to down, then swap the symmetry*1 2 3 7 8 9 7 4 1*4 5 6 => 4 5 6 => 8 5 2*7 8 9 1 2 3 9 6 3*/ 1matrix[:] = matrix[::-1] # 记住要用matrix[:], 不然更改的不对2#matrix = matrix[::-1]3foriinrange(len(matrix)):4forjinran...
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""...
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...
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 ++){ swap(matrix[i],...
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...
*/// Ref: https://leetcode.com/discuss/20589/a-common-method-to-rotate-the-image// test case: [[1,2,3], [4,5,6],[7,8,9]]publicvoidrotate(int[][]matrix){if(matrix.length<=1)return;intm=matrix.length,n=matrix[0].length;swapRows(matrix);// [[1,2,3,4],[5,6,7,8],...
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] 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...
Leetcode: Rotate Image Rotate the image by 90 degrees (clockwise). Follow up: Could you do this in-place?...C++参考代码: class Solution { public: void rotate(vector > &matrix) { if (matrix.empty 66520 Leetcode: Rotate Array 题目: Rotate an array of n elements to the right by k st...