quicksort

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Does quicksort with randomized median-of-three do appreciably better than randomized quicksort?

I was just answering a question about different approaches for picking the partition in a quicksort implementation and came up with a question that I honestly don\'t know how to answer.It\'s a bit mat[详细]

2023-02-11 01:58 分类：问答
PostgreSQL: How to force db use the "quicksort" sorting method instead of "top-N heapsort"?

Actually, all my question is written in subj-field. It\'s it somehow possible in PostgreSQL? Probably at server-config level, or can be configured in query, or in properties of table?[详细]

2023-02-11 01:19 分类：问答
Quicksort- how pivot-choosing strategies affect the overall Big-oh behavior of quicksort?

I have came up with several strategies, but I am not entirely sure how they affect the overall behavior. I know the average case is O(NlogN), so I would assume that would be in the answer somewhere. I[详细]

2023-02-10 18:13 分类：问答
Python Question about Variable Scope Rules

This is a source code for Quicksort in Python I found on Wikipedia. def pivot(v, left, r开发者_运维百科ight):[详细]

2023-02-10 10:54 分类：问答
QuickSort doesn't work for large inputs

Can anyone sp开发者_StackOverflow社区ot a problem with my quick sort implementation below? It seems to fail on arrays with more than 10 or so elements.[详细]

2023-02-10 06:42 分类：问答
Parallelizing quicksort makes it slower

I\'m quicksorting over a very large amount of data, and for fun am trying to parallelize it to speed up the sort. However, in it\'s current form, the multithreaded version is slower than the singlethr[详细]

2023-02-09 00:32 分类：问答
Why is C quicksort function much slower (tape comparisons, tape swapping) than bubble sort function?

I\'m going to implement a toy tape \"mainframe\" for a students, showing the quickness of \"quicksort\" class functions (recursive or not, does not really matter, due to the slow hardware, and well kn[详细]

2023-02-08 18:40 分类：问答
What is the worst case scenario for quicksort?

When does the quicksort algorithm take O(n^2) ti开发者_开发百科me?Quicksort works by taking a pivot, then putting all the elements lower than that pivot on one side and all the higher elements on the[详细]

2023-02-07 03:41 分类：问答
C# QuickSort too slow

I\'m learning different types of sorting now, and I found out that, starting from a certain point, my QuickSort algorithm doesn\'t work that quick at all.[详细]

2023-02-06 05:57 分类：问答
Why is my quick sort so slow?

I am practicing writing sorting algorithms as part of some interview preparation, and I am wondering if anybody can help me spot why this quick sort is not very fast?It appears to have the correct run[详细]

2023-02-02 13:25 分类：问答