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The Fastest Sorting function


The Fastest Sorting function

By : Dewaine
Date : October 17 2020, 11:12 PM
around this issue Use the std::sort function which typically defaults to quicksort (but deals with the ugly edge cases of e.g. a fully sorted array taking O(n^2) time).
Then measure the speed: if that's not good enough, describe details (e.g. how large are your arrays, what data do they contain, will there be a lot of equivalent elements and is stability important), and get further advice. Don't, for the love of Knuth, implement your own sorting function unless you have some extremely unique requirements!
code :


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Fastest Sorting Technique

Fastest Sorting Technique


By : Ahmed Eid
Date : March 29 2020, 07:55 AM
Hope this helps You can't ever sort in less than O(N), because you have to look at all N elements to determine that the list is sorted - so that's O(N) right there. You also can't sort faster than O(NlogN) if you sort by comparing against other elements in your list - but if you know something about your data, you can. If for example, you know that your data is English strings, you might be able to put them into buckets before sorting. e.g. put all strings starting with A into one bucket, with B into another, and so forth. This will be fast. You might need to make each bucket fairly large though - perhaps large enough to fit 1000 strings, since not all buckets will contain the same number of strings.
Then sort the individual buckets, which will be fast.
Sorting ItemsControl in WPF fastest way

Sorting ItemsControl in WPF fastest way


By : Sandra Foster
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further sorting 100 item based on a single property could probably never take 8-10 seconds on today's processors, there is something seriously wrong with the view.
if I am not wrong and it is related to your previous question. follow the steps below
code :
    private double progress { get; set; }

    public double Progress
    {
        get { return progress; }
        set
        {
            progress = value;
            NotifyChange(new PropertyChangedEventArgs("Progress"));
        }
    }
What is the fastest way of testing correctness of a sorting function?

What is the fastest way of testing correctness of a sorting function?


By : Crystal Graham
Date : March 29 2020, 07:55 AM
hope this fix your issue While you could check every single iteration of every single possible list, as you've pointed out this would be far too slow. Testing is not about proving the algorithm correct, for that you'd need to do a proof. Testing is about reducing the possibility of a bug by testing all the places it might hide. Testing rarely attempts to cover the entire possible space, but rather possible types of errors.
Here's some examples to exercise a sort function.
what is the fastest way of sorting a vector?

what is the fastest way of sorting a vector?


By : Jesus nails
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further You need to write your own operator< for your struct.
It should be something like
How to determine the fastest sorting algorithm out of two?

How to determine the fastest sorting algorithm out of two?


By : MisterSweet
Date : March 29 2020, 07:55 AM
seems to work fine sort3 is an implementation of QuickSort which has a O(n²) time complexity in the worst case, but O(nlogn) on average.
sort4 is an implementation of MergeSort which has a performance of O(nlogn) both in worst and average case.
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