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Introsort or
introspective sort is a
hybrid sorting algorithm that
provides both fast
average performance and (asymptotically)
optimal worst-case performance...
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performance and
optimal worst-case performance.
Introselect is
related to the
introsort sorting algorithm:
these are
analogous refinements of the
basic quickselect...
- for example, uses a 3-part
hybrid sorting algorithm:
introsort is
performed first (
introsort itself being a
hybrid of
quicksort and heap sort), to a...
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insertion sort, and
additional logic), used in Android, Java, and Python, and
introsort (quicksort and heapsort), used (in
variant forms) in some C++ sort implementations...
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required to
avoid bad
pivot choices and the
resultant O(n2) performance.
Introsort is a
variant of
quicksort which solves this
problem by
switching to heapsort...
- complexity. Heapsort, O ( n log n ) {\displaystyle O(n\log n)} ,
merge sort,
introsort,
binary tree sort, smoothsort,
patience sorting, etc. in the
worst case...
- quicksort,
which is fast in
practice but has poor worst-case performance, but
introsort was
introduced to
allow both fast
average performance and
optimal worst-case...
- well-known
comparison sorts include:
Quicksort Heapsort S****ort
Merge sort
Introsort Insertion sort
Selection sort
Bubble sort Odd–even sort ****tail shaker...
- complexity.
Another example of
hybrid algorithms for
performance reasons are
introsort and introselect,
which combine one
algorithm for fast
average performance...
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makes their implementation far more complex, and
implementations such as
introsort and pattern-defeating
quicksort use
heapsort as a last-resort fallback...
