Making a fast unstable sorting algorithm stable1Arne Maus
Glidesort is a novel stable sorting algorithm that combines the best-case behavior of Timsort-style merge sorts for pre-sorted data with the best-case behavior of pattern-defeating quicksort for data with many duplicates. It is a comparison-based sort supporting arbitrary comparison operators, and...
Keapsort is a comparison-based sorting algorithm with a worst-case O(n log n) runtime. As keap is a stable priority queue, Keapsort is stable. Unlike Heapsort, Keapsort doesn't have an in-place version. Like Heapsort, Keapsort produces first output after Θ(n) comparisons. For Keap...
Note that h is computed by a function f(n); here in particular, f(n) = (1/2)*n*log (n) –n/2, which means any sorting algorithm using comparisons will require O(n log n) comparisons to sort.References Bentley, J. and M. McIlroy, “Engineering a sort function,” Software—...
Previously I blogged about Culture Date Shouldn't Be Considered Stable (Except for Invariant) but it... Date: 10/16/2017 I used to be doing more than a post a year, maybe that'll change? Apparently I've been distracted by other things! I'll try to post some more, hopefully not to...
If the order of the first two equal data in the sequence is the same as the order of their two positions after the sorting, we say that the algorithm is stable, what does it mean? If the sorting algorithm is stable, the results and key fields of the first subsort can be used for...
<vector> #include <algorithm> // For std::stable_sort using namespace std; int main() { vector<int> v = {5, 3, 8, 1, 2, 5}; cout <<"Original vector: "; for (int i : v) { cout << i << " "; } cout << endl; // Sort the vector using std::stable_sort stable_...
When comparing tuples, Python behaves a lot like it’s sorting strings alphabetically. That is, it sorts them lexicographically. Lexicographical sorting means that if you have two tuples, (1, 2, 4) and (1, 2, 3), then you start by comparing the first item of each tuple. The first ...
Guided by gut sensory cues, humans and animals prefer nutritive sugars over non-caloric sweeteners, but how the gut steers such preferences remains unknown. In the intestine, neuropod cells synapse with vagal neurons to convey sugar stimuli to the brain
On the other hand, I know and thoroughly understand the pattern that allows making profit, which means it is time for some serious modernization. Usage in trading The big drawback of the current algorithm is its low return relative to risks. We need to be honest with ourselves and understand...