Write a method findElementIndex which takes an integer array and another integer as arguments and returns an index value if the array (first parameter) contains an element which is equal to to the integer (second parameter). If there is more than one element with the same value, the method should return the first (smallest) index value that contains the element. If the array does not contain an element with the given value, the method should return -1. For example, given the array {13, -1, 12} and the number 12 the method would return 2 because the number 12 is at index 2. {12, -1, 12} and 12 would return 0 because 12 is first found at index 0. On the other hand, {13, -1, 20} and 12 would return -1. If an array has no elements, the array doesn't contain the element you're looking for so the method should return false.