2545. Sort the Students by Their Kth Score

class Solution {
public:
    vector<vector<int>> sortTheStudents(vector<vector<int>>& score, int k) {
        
        int n=score.size();
        
        for(int i=0;i<n-1;i++)
        {
            for(int j=0;j<n-1-i;j++)    
            {
               if(score[j][k]<score[j+1][k]) 
                   swap(score[j],score[j+1]);
            }
        }
        return score;
        
    }
};