Runtime 3 ms Beats 99.42%
Memory 42.1 MB Beats 97.7%

#N2500. Delete Greatest Value in Each Row
problem link
#solution

class Solution {
    public int deleteGreatestValue(int[][] grid) {
        int m=grid.length, n=grid[0].length;
        int sum=0, max=0;
        for(int i=0; i<m; i++) Arrays.sort(grid[i]);
        
        for(int i=n-1; i>=0; i--){
            max=0;
            for(int j=0; j<m; j++){
                if(grid[j][i]>max) max=grid[j][i];
            }
            sum+=max;
        }
        return sum;
    }
}