return p (因为这个就是pivot应该在的位置) #the logic behind of quick sortclassSolution:defsortArray(self, nums: List[int]) ->List[int]:iflen(nums) <= 1:returnnums pivot=random.choice(nums) lt= [vforvinnumsifv <pivot] eq= [vforvinnumsifv ==pivot] gt= [vforvinnumsifv >pivot]returnself.sortArray(lt) + eq +...
For a more in-depth overview of the mergesort algorithm and how it is implemented, we can see this article which explainshow merge sort is applied on a linked list. Now that we have an idea of how Quicksort and Mergesort work, let’s see the main differences between these two algorithm...
本文原创,转载请注明地址 http://www.cnblogs.com/baokang/p/4737492.html 伪代码 quicksort(A, lo, hi) if lo < hi p = partition(A, lo, hi) quicksort(A, lo, p - 1) quicksort(A, p + 1, hi) partition(A, lo, hi) pivot = A[hi] i = lo //place for swapping for j = lo ...
魔术发生在for循环中。 此循环将数组划分为四个区域:a [low ... i] 包含<= pivot 的所有值 a [i + 1 ... j-1] 包含> pivot 的所有值 a [j ... high-1] 是我们“未查看”的值 a [high]是基准值In ASCII art the array is divided up like this: 用ASCII字符表示,数组按如下方...
The project contains algorithms that were implemented in my Data Structure & Algorithms course. Yes, I got marks for those. :P AlgorithmImplementations ├─ arithmeticExpressions │ ├─InfixEvaluation │ ├─InfixToPostfix │ ├─InfixToPrefix ...
In this case I chose the pivot to be the first item in the array, but it could also be the item in the middle, for example:const pivot = list[Math(floor(list.length / 2)]Notice how we first copy the array, so calling quickSort() does not modify the original array, it just retu...