/**
 * Matt Kretchmar
 * February 13, 2006
 * Palindrome.java
 * This program prompts the user for a series of input strings.
 * Each string is tested to see if it is a palindrome or not.
 */
import java.util.Scanner;

class Palindrome
{
    public static void main ( String [] args )
    {
        Scanner keyboard = new Scanner(System.in);
        String entry;
        int i, size;
        boolean isPalindrome;
   
        // repeat testing until user enters "quit"
        do
        {
            System.out.println("Enter a potential palindrome (or \"quit\"): ");
            entry = keyboard.next();
            
            // assume entry is a palindrome
            isPalindrome = true;
            size = entry.length();
            
            // loop from start to halfway
            for ( i = 0; i < size/2; i++ )
            {
                // if you find a character pair that don't match, 
                // then set isPalindrome to false
                if ( entry.charAt(i) != entry.charAt(size-i-1) )
                    isPalindrome = false;
            }
            
            // print appropriate response
            if ( isPalindrome )
                System.out.println("String " + entry + " is a palindrome.");
            else
                System.out.println("String " + entry + " is not a palindrome.");
            
        } while ( !entry.equals("quit") );
    }
}