题解 | #求最小公倍数#

最小公倍数公式(a,b)x[a,b]=ab(a,b均为整数)

一开始看题解中的方法在注释

BigInteger中的gcd是求公约数的：

https://blog.csdn.net/cumt30111/article/details/107796422 https://blog.csdn.net/weixin_30768403/article/details/115119543

import java.math.BigInteger;
import java.util.*;
import java.math.BigInteger.*;

public class Main{
    public static void main(String args[]){
        Scanner sc = new Scanner(System.in);

        int a = sc.nextInt();
        int b = sc.nextInt();
        BigInteger c = BigInteger.valueOf(a);
        BigInteger d = BigInteger.valueOf(b);
        BigInteger gcd = c.gcd(d);
        Integer g = Integer.parseInt(String.valueOf(gcd));
        System.out.println(a * b / g);
//        System.out.println(a*b/gcd(a,b));
    }

//    private static int gcd(int a, int b) {
//
//        return b==0?a:gcd(b,a%b);
//    }
}