Lecture Notes on 19 October 2011

public static int[] addArray (int[] a, int[] b)
{
  int[] c = new int [a.length];
  for (int i = 0; i < a.length; i++)
  {
    c[i] = a[i] + b[i];
  }
  return c;
}

int[] a = { 1, 2, 3, 4, 5, 6};
int[] b = { 1, 3, 6, 10, 15, 21};

 1  2  3  4
00 01 02 03

 5  6  7  8
10 11 12 13

 9 10 11 12
20 21 22 23

13 14 15 16
30 31 32 33

int sumD = 0;
for (int i = 0; i < a.length; i++)
{
  sumD = sumD + a[i][i];
}