//--https://www.codewars.com/kata/55e2adece53b4cdcb900006c/train/javapublic class Tortoise{  public static int[] race(int v1, int v2, int g){    int h = 0;    int mm = 0;    int s = 0;    if(v1 >= v2){      return null;    }    s = 3600 * g / (v2 - v1);    h = s / 3600;    s = s - 3600 * h;    mm = s / 60;    s = s - 60 * mm;    return new int[]{h,mm,s};  }  }