1 public static void main(String[] args) {
2 int x = 0;
3 for (int i = 0; i < 2; i++) {
4 System.out.println("compare i:" + i + " " + ++x);
5 for (int j = 0; j < 3; j++) {
6 System.out.println("compare j:" + j + " " + ++x);
7 for (int k = 0; k < 4; k++) {
8 System.out.println("compare k:" + k + " " + ++x);//i与2比较2次，j6次，k24次
9 }
10 }
11 }
12
13 System.out.println();
14 x = 0;
15
16 for (int i = 0; i < 4; i++) {
17 System.out.println("compare i:" + i + " " + ++x);
18 for (int j = 0; j < 3; j++) {
19 System.out.println("compare j:" + j + " " + ++x);
20 for (int k = 0; k < 2; k++) {
21 System.out.println("compare k:" + k + " " + ++x);//i 4；j 12；k 24；
22 }
23 }
24 }
25 }
