Write a method that takes an int[] array and an int value and returns the first index at which value appears in the array.

If the value does not exist in the array, return -1

For example:

search(new int[]{10, 20, 30, 20}, 20)

Should return

1

Because 20 first appears at index 1 in the array.

search(new int[]{10, 20, 30, 20}, 40)

Should return

-1

Because 40 does not appear in the array.