#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 |