java中如何确定数字的倍数
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how to determine the multiples of numbers in java
提问by ays
read 2 numbers and determine whether the first one is a multiple of second one.
读取 2 个数字并确定第一个数字是否是第二个数字的倍数。
采纳答案by Martijn Courteaux
if (first % second == 0) { ... }
回答by codaddict
A number xis a multiple of yif and only if the reminder after dividing xwith yis 0.
一个数字x是的倍数y当且仅当分割后的提醒x用y是0。
In Java the modulus operator(%) is used to get the reminder after the division. So x % ygives the reminder when xis divided by y.
在 Java 中，取模运算符 ( %) 用于获取除法后的提醒。所以除以x % y时给出提示。xy
回答by Erica
Given that this is almost certainly a homework question...
鉴于这几乎肯定是一个家庭作业问题......
The first thing you need to think about is how you would do this if you didn't have a computer in front of you. If I asked you "is 8 a multiple of 2", how would you go about solving it? Would that same solution work if I asked you "is 4882730048987" a multiple of 3"?
您需要考虑的第一件事是，如果您面前没有计算机，您将如何做到这一点。如果我问你“8 是 2 的倍数”，你会怎么解决？如果我问你“4882730048987”是 3 的倍数，同样的解决方案会起作用吗？
If you've figured out the math which would allow you to get an answer with just a pen and paper (or even a pocket calculator), then the next step is to figure out how to turn that into code.
如果您已经弄清楚了可以让您只用笔和纸（甚至是袖珍计算器）得到答案的数学方法，那么下一步就是弄清楚如何将其转化为代码。
Such a program would look a bit like this:
这样的程序看起来有点像这样：
- Start
- Read in the first number and store it
- Read in the second number and store it
- Implement the solution you identified in paragraph two using the mathematical operations, and store the result
- Print the result to the user.
- 开始
- 读入第一个数字并存储
- 读入第二个数字并存储
- 使用数学运算实现您在第二段中确定的解决方案，并存储结果
- 将结果打印给用户。
回答by ayush
//To check if num1 is a multiple of num2
import java.util.Scanner;
public class multiples {
public static void main(String[] args) {
Scanner reader = new Scanner(System.in);
System.out.println("Enter a number!");
int num1 = reader.nextInt();
reader.nextLine();
System.out.println("Enter another number!");
int num2 = reader.nextInt();
if ((num1 % num2) == 0) {
System.out.println("Yes! " + num1 + " is a multiple of " + num2 + "!");
} else {
System.out.println("No! " + num1 + " is not a multiple of " + num2 + "!");
}
reader.close();
}
}
