Write a function to determain if a string is Palindrome?

Question

Anoniem · Accepted Answer

use two pointer left and right in a while loop. check whether char at left equals to right. if yes, left++ and right--, if not, return false.

IsPalindrome · Answer

public static boolean isPalindrome(String text, int start, int end){
        if (text == null) {
            return false;
        }        
        if (start >= end) {
            return true;
        }        
        if (text.charAt(start) != text.charAt(end)) {
            return false;
        }
        return isPalindrome(text,start+1,end-1);
    }

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