lec_5.cpp

class Solution {
    public:
        vector<vector<int>> transpose(vector<vector<int>>& matrix) {
            int n = matrix.size();
            int m =  matrix[0].size();
             vector<vector<int>> temp(m, vector<int>(n));
    
             for(int i = 0 ; i<n; i++) {
    
                for(int j = 0 ; j<m; j++){
    
                    temp[j][i] =matrix[i][j];
                }
             }
    
             return temp;
        }
    };