48. Rotate Image

class Solution {

public:

void rotate(vector<vector<int>>& matrix) {

int len = matrix.size();

vector<vector<int> >res;

vector<int >temp;

for (int i = 0; i < len; i++)

{

for (int j = 0; j < len; j++)

{

temp.push_back(matrix[len - j-1][i]);

}

res.push_back(temp);

temp.clear();

}

for (int i = 0; i < len; i++)

{

for (int j = 0; j < len; j++)

{

matrix[i][j] = res[i][j];

}

}

}

};