python中实现列表元素的倒序排列

 

1、

>>> a = ["ccc","aaa","ddd","bbb"]   ## 利用列表分片
>>> b = a[::-1]
>>> b
['bbb', 'ddd', 'aaa', 'ccc']

 

2、

>>> a = ["ccc","aaa","ddd","bbb"]
>>> b = []
>>> for i in reversed(a):    ## 生成反转跌代体
    b.append(i)

    
>>> b
['bbb', 'ddd', 'aaa', 'ccc']

 

3、

>>> a = ["ccc","aaa","ddd","bbb"] 
>>> a.reverse()      ## 原地反转
>>> a
['bbb', 'ddd', 'aaa', 'ccc']

 

4、

>>> a = ["ccc","aaa","ddd","bbb"]
>>> b = []
>>> for i in range(len(a)):
    b.append(a.pop())    ## 利用pop

    
>>> b
['bbb', 'ddd', 'aaa', 'ccc']