HW6.23

 1 public class Solution
 2 {
 3     public static void main(String[] args)
 4     {
 5         boolean[] box = new boolean[101];
 6 
 7         for(int i = 1; i <= 100; i++)
 8         {
 9             for(int j = i; j <= 100; j += i)
10                 changeBox(box, j);
11         }
12 
13         for(int i = 1; i <= 100; i++)
14             System.out.printf("%d\t%b\n", i, box[i]);
15     }
16 
17     public static void changeBox(boolean[] array, int flag)
18     {
19         if(array[flag] == true)
20             array[flag] = false;
21         else
22             array[flag] = true;
23     }
24 }