1559 分解质因数

1559 分解质因数

⭐️难度：中等
🌟考点：唯一分解定理
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📚

import java.util.Scanner;
import java.util.Arrays;

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

        for (int i = a; i <= b ; i++) {
            System.out.print(i+"=");
            calc(i);
            System.out.println();
        }
    }

    static void calc(int x){
        boolean flag = false;
        for (int i = 2; i * i <= x ; i++) {
            while(x % i == 0){
                if(flag == true) System.out.print("*");
                flag = true;
                System.out.print(i);
                x /= i;
            }
        }
        if(x > 1){
            if(flag==true) System.out.print("*");
            System.out.print(x);
        }
    }
}