LeetCode 48. Rotate Image

题意

思路

代码

class Solution {
public:
void rotate(vector<vector<int>>& matrix) {
size_t len = matrix.size();
vector<vector<int> >ans;
for(int i = 0; i < len; i++){
vector<int>temp;
for(int j = 0; j < len; j++){
temp.push_back(matrix[len - j - 1][i]);
}
ans.push_back(temp);
}
for(int i = 0; i < len; i++){
for(int j = 0; j < len; j++){
matrix[i][j] = ans[i][j];
}
}
}
};