枚举列表的所有排列

Question

可能重复：
How to generate all permutations of a list in Python

我想获得其值的范围从0-7所有可能的组合。

对于如

arr[0]= 0,1,2,3,4,5,6,7 
arr[1]=1,2,3,4,5,6,7,0 
arr[2]=2,3,4,5,6,7,1,0 

arr[3]= 0,1,2,3,4,5,6,7 
arr[4]=1,2,3,4,5,6,7,0 
arr[5]=2,3,4,5,6,7,1,0 

arr[6]= 0,1,2,3,4,5,6,7 
arr[7]=1,2,3,4,5,6,7,0 
arr[8]=2,3,4,5,6,7,1,0 

arr[9]= 0,1,2,3,4,5,6,7..... 

等。

我想得到所有可能的组合，没有给定数值组中的重复数字，例如0-7。

Answer 1

事实上，这都将取决于语言...这里是一个简短的尝试在Python：

>>> from itertools import permutations 
>>> l = [0,1,2,3,4,5,6,7] 
>>> for p in permutations(l): 
    print p 


(0, 1, 2, 3, 4, 5, 6, 7) 
(0, 1, 2, 3, 4, 5, 7, 6) 
(0, 1, 2, 3, 4, 6, 5, 7) 
(0, 1, 2, 3, 4, 6, 7, 5) 
(0, 1, 2, 3, 4, 7, 5, 6) 
(0, 1, 2, 3, 4, 7, 6, 5) 
...