// package chapter7;

/**
 * Title:        Chapter 7, "Strings"
 * Description:  Examples for Chapter 7
 * Copyright:    Copyright (c) 2000
 * Company:      Armstrong Atlantic State University
 * @author Y. Daniel Liang
 * @version 1.0
 */
// CheckPalindrome.java: Check whether a string is a palindrome

// import chapter2.MyInput;

public class CheckPalindrome
{
  /**Main method*/
  public static void main(String[] args)
  {
    // Prompt the user to enter a string
    System.out.print("Enter a string: ");
    String s = MyInput.readString();

    if (isPalindrome(s))
    {
      System.out.println(s + " is a palindrome");
    }
    else
    {
      System.out.println(s + " is not a palindrome");
    }
  }

  /**Check if a string is a palindrome*/
  public static boolean isPalindrome(String s)
  {
    // The index of the first character in the string
    int low = 0;

    // The index of the last character in the string
    int high = s.length() - 1;

    while (low < high)
    {
      if (s.charAt(low) != s.charAt(high))
        return false; // Not a palindrome

      low++;
      high--;
    }

    return true; // The string is a palindrome
  }
}