main() bianry

public static void main(String[] args) {

    /* Sorted array */
    int[] elements = { 3, 4, 5, 11, 14, 19, 21, 26, 33, 49, 56, 71, 72, 74, 89, 90, 98, 100 };

    /* Return the index of an element */
    int index = BinarySearch.search(elements, 19);
    System.out.println("index: " + index);

    /* Element not found */
    int index2 = BinarySearch.search(elements, 42);
    System.out.println("index: " + index2);
}