Homework

Previously we have written a program to check for palindromes:

public static void main(String[] args) { Scanner input = new Scanner(System.in); String x = input.next(); /* ------------------------------------------ Algorithm to check if x is a palindrome ------------------------------------------ */ boolean isPalindrome = true; int i, last; last = x.length() - 1; for ( i = 0; i < x.length()/2; i++ ) { if ( x.charAt( i ) != x.charAt( last-i ) ) { isPalindrome = false; break; // We can exit the loop now } } System.out.println(isPalindrome); }

• Write a isPalindrome(s) method inside the Tools this class that returns true if the input string s is a palindrome and false otherwise.

  public class Tools { public static boolean isPalindrome(String s) { ... } }

  In another class (e.g.: MyProg), write a main( ) method that reads in a word and calls the isPalindrome( ) in the Tools class to prints out whether the input word is a palindrome.

  public class Tools { public static void main(String[] args) { // Reads in a word and check if it is a palindrome // Must use the isPalindrome( ) methid in the Tools class } }