public int maxcol(int[][] arr){
    int[] sums = new int[arr[0].length];
    for(i=0; i<sums.length ; i++){
        int sum = 0;
        for (int value : arr[i]) {
            sum += value;
        }
        sums[i] = sum;
    }
    int index = 0;
    int min = sums[0];

    for (int i = 1; i < sums.length; i++){
        if (sums[i] <= min){
        min = sums[i];
        index = i;
        }
    }
    return index;
}