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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static boolean isPalindrome(String word){
  11. 		System.out.println("Checking "+word+" length: "+word.length());
  12.     	if(word.length()==0 || word.length()==1){
  13.     		System.out.println("Base Case");
  14.         	return true; 
  15.     	} else if(word.charAt(0)==word.charAt(word.length()-1)){
  16.     		System.out.println("Resursive case substring(1,"+(word.length()-1)+")");
  17.         	return isPalindrome(word.substring(1, word.length()-1)); 
  18.     	}else {
  19.         	return false;
  20.     	} 
  21. 	}
  22.  
  23. 	public static void main (String[] args) throws java.lang.Exception
  24. 	{
  25. 		isPalindrome("abba");
  26. 	}
  27. }
Success #stdin #stdout 0.1s 320576KB
comments ()
stdin
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Standard input is empty
stdout
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Checking abba length: 4
Resursive case substring(1,3)
Checking bb length: 2
Resursive case substring(1,1)
Checking  length: 0
Base Case
https://ideone.com/QYuGnm
language:
Java (HotSpot 12)
created:
9 years ago
visibility:
public

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