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Mostly duplicated comments were removed and missing ones were moved into dedicated class CDL files. Some more duplicated comments were removed from CDL files. Correction of merge
122 lines
5.3 KiB
Plaintext
122 lines
5.3 KiB
Plaintext
-- Created on: 1991-03-07
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-- Created by: Herve Legrand
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-- Copyright (c) 1991-1999 Matra Datavision
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-- Copyright (c) 1999-2014 OPEN CASCADE SAS
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--
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-- This file is part of Open CASCADE Technology software library.
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--
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-- This library is free software; you can redistribute it and/or modify it under
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-- the terms of the GNU Lesser General Public License version 2.1 as published
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-- by the Free Software Foundation, with special exception defined in the file
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-- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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-- distribution for complete text of the license and disclaimer of any warranty.
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--
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-- Alternatively, this file may be used under the terms of Open CASCADE
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-- commercial license or contractual agreement.
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-- Revised: Fri Oct 30 1992
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-- By : Mireille MERCIEN
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package SortTools
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---Purpose: This package provides the basic sorting tools generally
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-- used.
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uses TCollection,
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TColStd
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is
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generic class HeapSort;
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generic class QuickSort;
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generic class ShellSort;
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generic class StraightInsertionSort;
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-- The table below summarizes the most important characteristics that
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-- must be considered when selecting a particular sorting algorithm.
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-- A sorting algorithm is known as stable if the initial order of items
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-- with equals keys is preserved after the sorting operation.
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------------------------------------------------------------------------
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-- Algorithm Stable Comparisons Moves
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-- Min Avg Max Min Avg Max
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------------------------------------------------------------------------
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-- 2 2
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-- QuickSort No nlogn nlogn n nlogn nlogn n
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--
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------------------------------------------------------------------------
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--
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-- HeapSort No nlogn nlogn nlogn nlogn nlogn nlogn
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--
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------------------------------------------------------------------------
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-- 1.25 1.25
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-- ShellSort No - n - - n -
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--
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------------------------------------------------------------------------
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-- 2 2 2 2
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-- StraightInsertion Yes n n n n n n
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--
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-------------------------------------------------------------------------
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--+ Heap sort exhibits an interesting time complexity, in that it runs
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-- on the order of nlogn for the best, average, and worst case.
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--+ Quick sort is still faster on the average(its constant of proportiona-
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-- lity is lower), but it does not guarantee such good worst-case perfor-
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-- mance.
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--+ Shell sort is not sensitive to the initial ordering and offers accepta-
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-- ble running time even for moderately larges arrays (say, 1000 elements).
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--+ Insertion sort is the method of choice for "almost sorted" arrays with
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-- few inversions : for such cases, it will outperform even the more
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-- sophisticated method (quick sort, heap sort).
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-- Instantiations --
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-- ************** --
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------------------------------------------------------------------------
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--
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-- Instantiations QuickSort (Integer,Real)
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-- ***************************************
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class QuickSortOfInteger instantiates QuickSort(Integer,
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Array1OfInteger from TColStd,
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CompareOfInteger from TCollection);
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class QuickSortOfReal instantiates QuickSort(Real,
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Array1OfReal from TColStd,
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CompareOfReal from TCollection );
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-- Instantiations HeapSort (Integer,Real)
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-- ***************************************
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class HeapSortOfInteger instantiates HeapSort(Integer,
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Array1OfInteger from TColStd,
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CompareOfInteger from TCollection);
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class HeapSortOfReal instantiates HeapSort(Real,
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Array1OfReal from TColStd,
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CompareOfReal from TCollection);
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-- Instantiations ShellSort (Integer,Real)
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-- ***************************************
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class ShellSortOfInteger instantiates ShellSort(Integer,
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Array1OfInteger from TColStd,
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CompareOfInteger from TCollection);
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class ShellSortOfReal instantiates ShellSort(Real,
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Array1OfReal from TColStd,
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CompareOfReal from TCollection );
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-- Instantiations StraightInsertionSort (Integer,Real)
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-- ***************************************************
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class StraightInsertionSortOfInteger instantiates
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StraightInsertionSort(Integer,
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Array1OfInteger from TColStd,
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CompareOfInteger from TCollection);
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class StraightInsertionSortOfReal instantiates
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StraightInsertionSort(Real,
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Array1OfReal from TColStd,
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CompareOfReal from TCollection);
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end SortTools;
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