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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 void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		isPalindrome("ab");
  13. 	}
  14.  
  15.    public static boolean isPalindrome(String s) {
  16.         if(s == null || s.length() <= 1)
  17.          return true;
  18.          StringBuffer sb = new StringBuffer();
  19.          char ch[] = s.toCharArray();
  20.  
  21.          for(int i = 0; i < ch.length ;i++){
  22.              if((ch[i] <= 'Z' && ch[i] >= 'A') || (ch[i] <= 'z' && ch[i] >= 'a')|| (ch[i] <= '9' && ch[i] >= '0'))
  23.              sb.append(ch[i]);
  24.          }
  25.         System.out.print(sb);
  26.          String s1 = sb.reverse().toString();
  27.          String s2 = sb.toString();
  28.          System.out.print(s1 +" "+s2);
  29.          if(s1.equalsIgnoreCase(s2))
  30.           return true;
  31.  
  32.          return false; 
  33.     }
  34. }
Success #stdin #stdout 0.1s 320576KB
comments (?)
stdin
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Standard input is empty
stdout
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abba ba
https://ideone.com/GkwLoW
language:
Java (12.0.1)
created:
8 years ago
visibility:
public

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