public class LinearSearch { static int search(int arr[], int el) { for (int i = 0; i < arr.length; i++) { if (arr[i] == el) { return i + 1; } } return -1; } public static void main(String[] args) { System.out.println(search(new int[]{1, 2, 3, 4, 5}, 2)); System.out.println(search(new int[]{1, 2, 3, 4, 5}, 0)); } }