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Python学习笔记_数据排序方法

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2016-06-16 08:44:121184browse

1. 原地排序:采用sort()方法,按照指定的顺序排列数据后用排序后的数据替换原来的数据(原来的顺序丢失),如:

复制代码 代码如下:

>>> data1=[4,2,6,432,78,43,22,896,42,677,12]
>>> data1.sort()
>>> data1       #原来的顺序被替换
[2, 4, 6, 12, 22, 42, 43, 78, 432, 677, 896]

2. 复制排序:采用sorted()内置函数,按照指定的顺序排列数据后返回原数据的一个有序副本(原来的顺序保留),如:

复制代码 代码如下:

>>> data1=[4,2,6,432,78,43,22,896,42,677,12]
>>> data2=sorted(data1)
>>> data1    
[4, 2, 6, 432, 78, 43, 22, 896, 42, 677, 12]    #原顺序保留
>>> data2   
[2, 4, 6, 12, 22, 42, 43, 78, 432, 677, 896]    #对副本排序
>>>
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