元素 |
可达集合 |
先行集合 |
交集 |
层级 |
1 |
1,2,3,4,5 |
1,6,7 |
1 |
|
2 |
2,3,4,5 |
1,2,3,4,5,6,7,9 |
2,3,4,5 |
II |
3 |
2,3,4,5 |
1,2,3,4,5,6,7,9 |
2,3,4,5 |
II |
4 |
2,3,4,5 |
1,2,3,4,5,6,7,9 |
2,3,4,5 |
II |
5 |
2,3,4,5 |
1,2,3,4,5,6,7,9 |
2,3,4,5 |
II |
6 |
1,2,3,4,5,6,7 |
6 |
6 |
|
7 |
1,2,3,4,5,7 |
6,7 |
7 |
|
9 |
2,3,4,5,9 |
9 |
9 |