/**

* Recursion exercise.

*/

import java.util.Scanner;

public class Recurse {

public static void main(String[] args) {

String s, sBackward;

Scanner stringIn = new Scanner(System.in);

System.out.print("Enter a string of text. ");

s = stringIn.nextLine();

System.out.println("First character: " + first(s));

System.out.println("Remainder of the string: " + rest(s));

System.out.println("Middle of the string: " + middle(s));

System.out.println("Length: " + length(s));

printString(s);

sBackward = printBackward(s);

isPalindrome(s, sBackward);

}

/**

* Returns the first character of the given String.

*/

public static char first(String s) {

return s.charAt(0);

}

/**

* Returns all but the first letter of the given String.

*/

public static String rest(String s) {

return s.substring(1);

}

/**

* Returns all but the first and last letter of the String.

*/

public static String middle(String s) {

return s.substring(1, s.length() - 1);

}

/**

* Returns the length of the given String.

*/

public static int length(String s) {

return s.length();

}

public static void printString(String s) {

for (int i = 0; i < s.length(); i++) {

System.out.println(s.charAt(i));

}

}

public static String printBackward(String s) {

String backward = "";

for (int i = (s.length() - 1); i >= 0; i--) {

backward += s.charAt(i);

}

return backward;

}

public static boolean isPalindrome(String s, String sBackward) {

boolean check = s.equals(sBackward);

System.out.print("Is your string a palindrome? ");

System.out.println(check);

return check;

}

}