1importrandom23defpartition(A, lo, hi):4pivot_index =random.randint(lo, hi)5pivot =A[pivot_index]6A[pivot_index], A[hi] =A[hi], A[pivot_index]7store_index =lo8foriinrange(lo, hi):9ifA[i] <pivot:10A[i], A[store_index] =A[store_index], A[i]11store_index = store_index...
以下是快速排序的Python实现: def quick_sort(arr): if len(arr) <= 1: return arr pivot = arr[len(arr) // 2] left = [x for x in arr if x < pivot] middle = [x for x in arr if x == pivot] right = [x for x in arr if x > pivot] return quick_sort(left) + middle + ...
def quick_sort(lis): if len(lis) < 2: ## 考虑长度 =1 的情况 return lis else: piv = lis[0] ## 首元素是分区的边界 less = [i for i in lis[1:] if i <= piv] ## 左边区域 great = [i for i in lis[1:] if i > piv] ## 右边区域 return quick_sort(less) + [piv] +...
Sort the array in-place in the range [left, right( """ if left >= right: return pivot_index = random.randint(left, right - 1) swap(A, left, pivot_index) pivot_new_index = partition(A, left, right) quicksort(A, left, pivot_new_index) quicksort(A, pivot_new_index + 1, righ...
快速排序quick_sort（python的两种实现⽅式）排序算法有很多，⽬前最好的是quick_sort:unstable，spatial complexity is nlogN.快速排序原理 python实现 严蔚敏的 datastruct书中有伪代码实现，因为Amazon⾯试需要排序，所以⽤python实现了。两种实现⽅法，功能⼀致，效率没测，请⾼⼿留⾔ 第⼀种实现 ...
quick_sort_standord(array2,0,len(array2)-1)printarray2 第二种实现 这是特殊实现, #!/usr/bin/python# -*- coding: utf-8 -*-''' @author: willard '''defsub_sort(array,low,high): key = array[low]whilelow < high:whilelow < highandarray[high] >= key: ...
Python Java C C++ # Quick sort in Python# function to find the partition positiondefpartition(array, low, high):# choose the rightmost element as pivotpivot = array[high]# pointer for greater elementi = low -1# traverse through all elements# compare each element with pivotforjinrange(low,...
quickSort(arr, left, right): if left < right: p = partition(arr, left, right) quickSort(arr, left, p-1) quickSort(arr, p+1, right) def partition(arr, left, right): pivot = arr[right] i = left - 1 for j in range(
Quick Sort ExampleThe following is a Python implementation of the Quick Sort algorithm. quick_sort.py def quick_sort(arr): if len(arr) <= 1: return arr pivot = arr[len(arr) // 2] left = [x for x in arr if x < pivot] middle = [x for x in arr if x == pivot] right = ...
python算法 之 快速排序(Quick Sort) O( 1) < O(logn) < O(n) < O(nlogn) < O(n^ 2) < O(n^ 3) < O(2^n) < O(n!) 1. 一、快速排序 快速排序(Quick Sort)是一种基于分治思想的排序算法,是目前使用最广泛的排序算法之一。其基本思想是选取一个基准元素,然后将数组分成小于等于基准的子...