public static void 2Dsort(int info[][],int i, int e)//sort for 2d integer array
     {
        int tmp;
        int smallest;
        for (int a=0;a<i-1;a++)
        {
            for (int b=a+1;b<i;b++)
            {
                if (info [b][a]>info[b+1][a])
                {
                    for (int d = 0 ; d < e ; d++)
                    {
                        tmp = info [a][d];
                        info [a][d]=info [b][d];
                        info [b][d]=tmp;
                    }
                }
            }
            
        }
    }