Top "Quicksort" questions

Quicksort is a sorting algorithm invented by C. A. R. Hoare that has an average-case complexity of O(n log n) and worst-case quadratic complexity.

Why should Insertion Sort be used after threshold crossover in Merge Sort

I have read everywhere that for divide and conquer sorting algorithms like Merge-Sort and Quicksort, instead of recursing until only …

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What is the advantage of using tail recursion here?

I have been reading articles describing how space complexity of quicksort can be reduced by using the tail recursive version …

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Wait for all threads in an Executor to finish?

I'm implementing a parellel quicksort as programming practice, and after I finished, I read the Java tutorial page on Executors, …

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Quicksort and tail recursive optimization

In Introduction to Algorithms p169 it talks about using tail recursion for Quicksort. The original Quicksort algorithm earlier in the …

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Improving the Quick sort

If possible, how can I improve the following quick sort(performance wise). Any suggestions? void main() { quick(a,0,n-1); } void …

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Using red black trees for sorting

The worst-case running time of insertion on a red-black tree is O(lg n) and if I perform a in-order …

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Understanding quicksort

I'm having a hard time understanding quicksort, most of the demonstrations and explanations leave out what actually happens (http://me.…

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What is a Deterministic Quicksort?

I have been reading about Quicksort and found that sometimes it' s referred to as "Deterministic Quicksort". Is this an …

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Why is quicksort used in practice?

Quicksort has a worst-case performance of O(n2), but is still used widely in practice anyway. Why is this?

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Idiomatic quicksort in Go

I'm taking a look at Go, and was trying to find idiomatic implementations of classic algorithms to get a feel …

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