leetcode Rotate Image
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可以将图片看成二维矩阵,先将矩阵转置,再将每一行倒序即可
代码
class Solution {public: void rotate(vector<vector<int> > &matrix) { int iRows = matrix.size(); if(iRows==0) return ; int iCols = matrix[0].size(); if(iCols==0) return ; for(int i = 0; i < iRows; ++i) { for(int j = i; j < iCols; ++j) swap(matrix[i][j], matrix[j][i]); reverse(matrix[i].begin(), matrix[i].end()); } }};
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