java - 我定义了一个随机数，我想检查它是否是回文java

Question

import java.util.Random;

public class Loop6 {
    public static void main(String[] args) {

        Random number = new Random();
        int value = number.nextInt(1000);
        System.out.println("random number : " + " " + value);

        int rev = 0;
        int dig;

        while (value > 0) {
            dig = value % 10;
            rev = rev * 10;
            rev = rev + dig;
            value = value / 10;
        }
        System.out.println("rev is : " + "" + rev);
        if(value==rev) {
            System.out.println("Palindrome");

        }

    }
}

Answer 1

Java 有内置方法来反转字符串。

String originalValue = value + "";
StringBuilder stringBuilder = new StringBuilder(originalValue);
String reverseValue = stringBuilder.reverse().toString();

if (originalValue.equals(reverseValue)) System.out.println("Palindrome");