1886_DetermineWhetherMatrixCanBeObtainedByRotation - a920604a/leetcode GitHub Wiki

class Solution {
public:
    bool findRotation(vector<vector<int>>& mat, vector<vector<int>>& target) {
        int t =3;
        int n = mat.size();
        if(mat == target) return true;
        while(t--){
            // rotate one time
            reverse(mat.begin(), mat.end());
            
            for(int i=0;i<n;++i){
                for(int j=i+1;j<n;++j){
                    swap(mat[i][j], mat[j][i]);
                }
            }
            if(mat == target) return true;
        }
        return false;
    }
};