python中实现列表倒序排列

 

1、

>>> a = list(range(1,11)) ## 生成列表
>>> a
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
>>> a[::-1]  ## 倒序排列
[10, 9, 8, 7, 6, 5, 4, 3, 2, 1]
>>> a
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
>>> b = []
>>> for i in reversed(a):    ## 实现倒序排列
    b.append(i)

    
>>> b   
[10, 9, 8, 7, 6, 5, 4, 3, 2, 1]

 

2、在原列表上实现倒序排列

>>> a
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
>>> a.reverse()
>>> a
[10, 9, 8, 7, 6, 5, 4, 3, 2, 1]