Lecture Notes on 25 Feb 2013

public class LuckyHouse
{
  public static void main (String[] args)
  {
    int lastL = 0;
    int lastR = 0;
    long sumL = 0;
    long sumR = 0;
    int lastHouse = 10000;

    while (lastR <= lastHouse)
    {
      lastL = lastL + 1;
      sumL = sumL + lastL;
      lastR = lastL + 2;
      sumR = lastR;
      while (sumR < sumL)
      {
        lastR = lastR + 1;
	sumR = sumR + lastR;
      }

      if (sumR == sumL)
      {
        System.out.println ((lastL + 1) + "  " + lastR);
      }

    }
  }
}