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Python实现冒泡，插入，选择排序简单实例

2018-01-31

Python实现冒泡，插入，选择排序简单实例

本文所述的Python实现冒泡，插入，选择排序简单实例比较适合Python初学者从基础开始学习数据结构和算法，示例简单易懂，

具体代码如下：

# -*- coding: cp936 -*-
#python插入排序
def insertSort(a):
for i in range(len(a)-1):
    #print a,i
    for j in range(i+1,len(a)):
      if a[i]>a[j]:
        temp = a[i]
        a[i] = a[j]
        a[j] = temp
return a

#Python的冒泡排序
def bubbleSort(alist):
for passnum in range(len(alist)-1,0,-1):
    #print alist,passnum
    for i in range(passnum):
      if alist[i]>alist[i+1]:
        temp = alist[i]
        alist[i] = alist[i+1]
        alist[i+1] = temp
return alist

#Python的选择排序
def selectionSort(alist):
for i in range(len(alist)-1,0,-1):
    maxone = 0
    for j in range(1,i+1):
      if alist[j]>alist[maxone]:
        maxone = j
    temp = alist[i]
    alist[i] = alist[maxone]
    alist[maxone] = temp
return alist

alist = [54,26,93,17,77,31,44,55,20]
#print bubbleSort(alist)
alist = [54,26,93,17,77,31,44,55,20]
print selectionSort(alist)
感兴趣的朋友可以动手测试一下本文实例，相信会有新的收获。