如何在java中求和整数的数字？ [英] How to sum digits of an integer in java?

问题描述

我很难找到解决这个问题的方法。我正在尝试用Java开发一个带有数字的程序，例如321，并找到数字的总和，在这种情况下3 + 2 + 1 = 6.我需要任何三位数的所有数字将它们加在一起，并使用％余数符号存储该值。这让我感到困惑，我会很感激任何想法。

I am having a hard time figuring out the solution to this problem. I am trying to develop a program in Java that takes a number, such as 321, and finds the sum of digits, in this case 3 + 2 + 1 = 6. I need all the digits of any three digit number to add them together, and store that value using the % remainder symbol. This has been confusing me and I would appreciate anyones ideas.

推荐答案

public static void main(String[] args) {
        int num = 321;
        int sum = 0;
        while (num > 0) {
            sum = sum + num % 10;
            num = num / 10;
        }
        System.out.println(sum);
    }

输出

6

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