你就快到了。现在，你要打印出反映的数字，而不是把它们放在一起生成完整的数字。一旦你有了它，你就可以把这两个加起来：

// Copy number to a temp variable so we have it later for the sum
int temp = number;
int reflectedNumber = 0;

while (temp != 0) {
    int reflectedDigit = temp % 10;
    temp /= 10;
    reflectedNumber = reflectedNumber * 10 + refletedDigit;
}

// Now you have both the number and the reflected number - sum them:
int result = number + reflectedNumberl

您需要保留原始号码的备份，在计算完反射号码后，可以将其添加到反射号码中。此外，您不必只打印反映的数字；相反，您必须按如下所示进行计算：

public class Main {
    public static void main(String[] args) {
        int number = 123;
        int reflectedNumber = 0;
        int original = number;

        while (number != 0) {
            int lastDigit = number % 10;
            reflectedNumber = reflectedNumber * 10 + lastDigit;
            number = number / 10;
        }

        System.out.println("The reflected number is: " + reflectedNumber);
        System.out.println("Sum of original and reflected = " + (original + reflectedNumber));
    }
}

输出：

The reflected number is: 321
Sum of original and reflected = 444

只需将原始数字复制到另一个变量中，并将其添加到反映的数字中