Java：求两数的最大公约数

import java.util.Scanner;
public class TestDemo4 {
	public static void main(String[] args) {
		Scanner scan = new Scanner (System.in);
		int a = scan.nextInt();
		int b = scan.nextInt();
		int c = a%b;
		while(c != 0){
			a = b;
			b = c;
			c = a % b;
		}
		System.out.println("最大公约数："+b);
	}
}

将两数a b求余得c：a % b = c;

若c = 0；则b为最大公约数；

若c != 0; 则a = b;b = c;从第一步开始继续执行，直至c = 0.