Top "Mergesort" questions

Merge sort is an O(n log n) worst-case comparison-based stable sorting algorithm.

sorting a doubly linked list with merge sort

I have found this code in the internet and it was for arrays ,I want to change it for doubly …

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Mergesort - Is Bottom-Up faster than Top-Down?

I've been reading "Algorithms, 4th Ed" by Sedgewick & Wayne, and along the way I've been implementing the algorithms discussed …

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Number of Comparisons using merge sort

If you have 5 distinct numbers, how many comparisons at most do you need to sort this using merge sort?

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Time Complexity/Cost of External Merge Sort

I got this from a link which talks about external merge sort. From slide 6 Example: with 5 buffer pages, to sort 108 …

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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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Using Loop invariant to prove correctness of merge sort (Initialization , Maintenance , Termination)

How would you go about proving the correctness of merge sort with reasoning over the states of loop invariants?.The …

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Non-recursive merge sort with two nested loops - how?

First question here, and yes this is a homework question. We are tasked with performing merge sort on an array (…

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C++ How to merge sorted vectors into a sorted vector / pop the least element from all of them?

I have a collection of about a hundred or so sorted vector<int>'s Although most vectors have …

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Which is more efficient, Sorting and then Binary Search over a Collection or Linear Search in java

Suppose I am having a Collection of object: List<String> myList = populateMyArrayList(); //Here I am having an ArrayList …

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What are sentinel in C language? I was learning Merge sort and came across using sentinel as infinity in the merge step

I was learning Merge sort and came across using sentinel as infinity in the merge step. Here is the algorithm …

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