题解 | #顺时针旋转矩阵#
顺时针旋转矩阵
https://www.nowcoder.com/practice/2e95333fbdd4451395066957e24909cc
先转置，再水平翻转即可
class Solution {
public:
vector<vector<int> > rotateMatrix(vector<vector<int> >& mat, int n) {
for (int i = 0; i < n; i++) {
for (int j = i; j < n; j++) {
swap(mat[i][j], mat[j][i]);
}
reverse(mat[i].begin(), mat[i].end());
}
return mat;
}
};
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