public class Exercise1b
{
  // assigns val to each element of a starting at position from (inclusive)
  // and ending at position to (exclusive)
  // returns the number of positions at which the value was written
  public static int fill(int[] a, int from, int to, int val)
  {
  	for (int i=from; i<to; i++)
  	{
  	  a[i] = val;
  	}
  	int result = to-from;
  	if (result >= 0) return result;
  	return 0;
  }
}