数据结构学习（冒泡、选择、插入、快速排.....

#coding=utf-8

'''
数据结构排序
'''
#函数冒泡排序
#   参数alist：被排序的列表
def bubbleSort(alist):
    for num in range(len(alist)-1,0,-1):
        for i in range(num):
            if alist[i] < alist[i+1]:
                #进行当前位置和下一个位置的交换
                alist[i] = alist[i]^alist[i+1]
                alist[i+1] = alist[i]^alist[i+1]
                alist[i] = alist[i]^alist[i+1]
    return alist

#函数选择排序
#   参数alist：被排序的列表
def selectSort(alist):
    for num in range(len(alist)-1,0,-1):
        positionMax = 0
        for index in range(1,num+1):
            if alist[positionMax] < alist[index]:
                positionMax = index

        # temp = alist[num]
        # alist[num] = alist[positionMax]
        # alist[positionMax] =temp

        alist[num] = alist[num]^alist[positionMax]
        alist[positionMax] = alist[num]^alist[positionMax]
        alist[num] = alist[num]^alist[positionMax]
        print alist[num]
    return alist

#函数插入排序
#   参数alist：被排序的列表
def insertSort(alist):
    for index in range(1,len(alist)):
        temp = alist[index]
        protion = index

        while alist[protion-1] > temp and protion > 0:
            alist[protion] = alist[protion-1]
            protion = protion-1

        alist[protion] = temp
    return alist

number=[54,26,93,17,77,31,44,55,21]

#快速排序
#    参数alist：被排序的列表
#    参数low：左侧起始位置
#    参数hegh：右侧终止位置
def quickSort(alist,low,hegh):
    if low < hegh:
        pos = findpos(alist,low,hegh)

        quickSort(alist, low, pos-1)
        quickSort(alist, pos+1, hegh)

    return alist

#快排中查找中间节点
#    参数alist：被产讯的列表
#    参数low：左侧起始位置
#    参数hegh：右侧终止位置
def findpos(alist,left,right):
    temp = alist[left]

    while left < right:    
        while left < right and alist[right] >= temp:
            right -= 1
        alist[left] = alist[right]

        while left < right and alist[left] <= temp:
            left += 1
        alist[right] = alist[left]

    alist[right] = temp

    return right

if __name__ == "__main__":

    # #测试冒泡排序：
    # num = bubbleSort(number)
    # print num

    # #调用选择排序
    # num = selectSort(number)
    # print num

    #调入插入排序
    num = insertSort(number)
    print num

    # #快速排序
    # num = quickSort(number, 0, len(number)-1)
    # print num