隨機產生一百萬個0~9的數字,排成一排,
如:3、1、4、9、0、4、6、....
把兩兩相鄰的數字相減,可以得到999999組差值(取絕對值),
如:|3-1|=2,|1-4|=3,|4-9|=5,....
請問,這麼多組差值的平均大概是多少呢?
3.3
a\b | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
0 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
1 | 1 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
2 | 2 | 1 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
3 | 3 | 2 | 1 | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
4 | 4 | 3 | 2 | 1 | 0 | 1 | 2 | 3 | 4 | 5 |
5 | 5 | 4 | 3 | 2 | 1 | 0 | 1 | 2 | 3 | 4 |
6 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | 1 | 2 | 3 |
7 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | 1 | 2 |
8 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | 1 |
9 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |