BestRandom

import java.lang.Math;

public class BestRandom
{
  public static void main(String[] args)
  {
    BestRandom r = new BestRandom();
    int o1 = r.random_int(0,99);
    System.out.println(o1);
    int o2 = r.random_int(0,99);
    System.out.println(o2);
  }

    private static int random_int(int l, int u) {
      int n = (int) System.currentTimeMillis();
      int length = (int) (Math.log10(u) + 1);

      while(true){
        //get last length number of digits from n
        int t = n % ((int) Math.pow(10, length));
        if(t<u && t>l)
          return t;
        else
          n = (int) System.currentTimeMillis();
      }

    }
}