Python实现快速排序算法及去重的快速排序的简单示例

6 2 4 5 3

2 3 6 4 5

6 4 5

4 5 6

2 3 4 5 6

def quick_sort(array):
  less = []; greater = []
  if len(array) <= 1:
    return array
  pivot = array.pop()
  for x in array:
    if x <= pivot: less.append(x)
    else: greater.append(x)
  return quick_sort(less) + [pivot] + quick_sort(greater)
list = [2,4,2,6,7,8,1]

print quick_sort(list)

[1, 2, 2, 4, 6, 7, 8]

# -*- coding: utf-8 -*- 
  
import random 
 
L = [2, 3, 8, 4, 9, 5, 6, 5, 6, 10, 17, 11, 2] 
 
def qsort(L): 
  if len(L)<2: return L 
  pivot_element = random.choice(L) 
  small = [i for i in L if i< pivot_element] 
  #medium = [i for i in L if i==pivot_element] 
  large = [i for i in L if i> pivot_element] 
  return qsort(small) + [pivot_element] + qsort(large) 
 
print(qsort(L)) 

[2, 3, 4, 5, 6, 8, 9, 10, 11, 17] 

mylist = list(set(L)) #集合自动排序字符串