Write code to get the index of an element in an array
//package com.book2s; public class Main { public static void main(String[] argv) { String el = "book2s.com"; String[] ar = new String[] { "1", "abc", "level", null, "book2s.com", "asdf 123" }; System.out.println(index(el, ar)); }/*w w w .j a v a 2s . co m*/ /** * @return the index of the first element in "ar" that is equals to "el" or * -1 (if there is no element equal to el). */ public static int index(final String el, final String[] ar) { for (int i = 0; i < ar.length; ++i) { if (ar[i].equals(el)) return i; } return -1; } }