Java 代码实现回文串判断 - 7-5 验证回文串

import java.util.Scanner;

public class Palindrome { public static void main(String[] args) { Scanner sc = new Scanner(System.in); String str = sc.nextLine();

    if(isPalindrome(str)) {
        System.out.println('yes');
    } else {
        System.out.println('no');
    }
}

public static boolean isPalindrome(String str) {
    int left = 0;
    int right = str.length() - 1;
    
    while(left < right) {
        if(str.charAt(left) != str.charAt(right)) {
            return false;
        }
        left++;
        right--;
    }
    
    return true;
}

}