java - is string palindrome ?

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public class _String { static boolean is_palindrome(String s){ char[] chars = s.toCharArray(); for (int i = 0; i < chars.length; i++) chars[i] = Character.toLowerCase(chars[i]); return is_palindrome(chars); } static boolean is_palindrome(char[] chars){ if(chars.length < 2) return true; int start = 0; int end = chars.length - 1; while(start <= end){ if(chars[start++] != chars[end--]) return false; } return true; } }

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