基础练习 分解质因数

 1 import java.text.DecimalFormat;
 2 import java.text.NumberFormat;
 3 import java.util.ArrayList;
 4 import java.util.Scanner;  
 5 
 6     public class Main{   
 7         public static void main(String[] args){  
 8             Scanner input = new Scanner(System.in);
 9             int n,m;
10             n = input.nextInt();
11             m = input.nextInt();
12             for(int i=n;i<=m;i++){
13                 int temp = i;
14                 int j = 2;
15                 boolean flag = true;
16                 System.out.print(i+"=");
17                 while(temp!=1){
18                     if(temp%j==0){
19                         if(flag){
20                             System.out.print(j);
21                             temp = temp/j;
22                             flag = false;
23                             continue;
24                         }
25                         System.out.print("*"+j);
26                         temp = temp/j;
27                     }else{
28                         j++;
29                     }
30                 }
31                 System.out.println();
32                 
33             }
34         }
35  }