Top "Mergesort" questions

Why does Java's Arrays.sort method use two different sorting algorithms for different types?

Java 6's Arrays.sort method uses Quicksort for arrays of primitives and merge sort for arrays of objects. I believe …

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How external merge sort algorithm works?

I'm trying to understand how external merge sort algorithm works (I saw some answers for same question, but didn't find …

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Understanding the Recursion of mergesort

Most of the mergesort implementations I see are similar to this. intro to algorithms book along with online implentations I …

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What's the difference between quicksort and mergesort?

Am I right in saying that in both algorithms, all you're doing is taking your structure, recursively splitting it into …

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Sorting a linked list in Java

I have written a bubble sort algorithm to sort a linked list. I am a Java beginner and trying to …

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Multithreaded quicksort or mergesort

How can I implement a concurrent quicksort or mergesort algorithm for Java? We've had issues on a 16-(virtual)-cores …

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why is merge sort preferred over quick sort for sorting linked lists

I read the following in a forum : Merge sort is very efficient for immutable datastructures like linked lists and Quick …

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When merge sort is preferred over Quick sort?

Quick sort is much better than merge sort in many cases. Though, when are the cases when merge sort might …

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What sort does Java Collections.sort(nodes) use?

I think it is MergeSort, which is O(n log n). However, the following output disagrees: -1,0000000099000391,0000000099000427 1,0000000099000427,0000000099000346 5,0000000099000391,0000000099000346 1,0000000099000427,0000000099000345 5,0000000099000391,0000000099000345 1,0000000099000346,0000000099000345 I am sorting …

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A prepared statement, `WHERE .. IN(..)` query and sorting — with MySQL

Imagine we have a query: SELECT * FROM somewhere WHERE `id` IN(1,5,18,25) ORDER BY `name`; and an array of IDs to …

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