Lecture Notes on 27 Feb 2013

import java.util.*;

public class Test_3
{

  public static int sumIter (int n)
  {
    int sum = 0;
    for (int i = 1; i <= n; i++)
    {
      sum = sum + i;
    }
    return sum;
  }

  public static int sumRec (int n)
  {
    if (n == 1)
    {
      return 1;
    }
    else
    {
      return sumRec (n - 1) + n;
    }
  }

  public static void main (String[] args)
  {
    int sum = sumRec (4);
  }
}