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Quicksort is a sorting algorithm invented by C. A. R. Hoare that has an average-case complexity of O(n log n), worst-case complexity of O(n^2). It is one of the fastest general-purpose sorting algorithms in practice.

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Why is my Bubblesort implementation faster than my Quicksort code?

It is normal in production quality qsort code to switch to another sorting method (maybe a unrolled bubble sort) when the size of the input is small (often 8 is used). QSort has very high overheads …
Ian Ringrose's user avatar