学步园

                                                 Delphi泛型库DGL中的算法部分声明
                                                       
HouSisong@GMail.com

tag:delphi泛型库,DGL,泛型,算法

DGL库下载  
安装方法：将库解压到一个目录，然后在Delphi中添加搜索路径

DGL库的算法的声明文件Algorithms.inc_h：

//////////////////////////////////////////////////////////////////////////////////////////////////////////

//------------------------------------------------------------------------------
// Copyright (c) 2004
// Delhi泛型库--DGL(The Delphi Generic Library)
// Author: HouSisong
//------------------------------------------------------------------------------
// DGL库的算法的声明
// Create by HouSisong, 2004.09.01
// LastUpdate by HouSisong, 2005.03.27
//------------------------------------------------------------------------------

//Algorithms.inc_h ; Algorithms.inc_pas

{$ifndef  __Algorithms_inc_h_}
{$define  __Algorithms_inc_h_}

{$I DGLIntf.inc_h}

  {$ifndef  _DGL_Compare}
    function _IsEqual(const Value0,Value1:_ValueType):boolean;
    function _IsLess(const Value0,Value1:_ValueType):boolean;
  {$endif}
  {$ifndef  _DGL_Compare_Value}
    function _IsEqual_Value(const Value0,Value1:_ValueType):boolean;
    function _IsLess_Value(const Value0,Value1:_ValueType):boolean;
  {$endif}

type
  TGenerateFunction         = function (): _ValueType;
  TGenerateFunctionOfObject = function (): _ValueType of object;
  TTansfromFunction         = function (const Value: _ValueType): _ValueType;
  TTansfromFunctionOfObject = function (const Value: _ValueType): _ValueType of object;
  TTansfromBinaryFunction         = function (const Value0,Value1: _ValueType): _ValueType;
  TTansfromBinaryFunctionOfObject = function (const Value0,Value1: _ValueType): _ValueType of object;
  TVisitProc         = procedure (const Value: _ValueType);
  TVisitProcOfObject = procedure (const Value: _ValueType) of object;
  TTestFunction         = function (const Value:_ValueType):Boolean;
  TTestFunctionOfObject = function (const Value:_ValueType):Boolean Of Object;
  TTestBinaryFunction         = function (const Value0,Value1:_ValueType):Boolean;
  TTestBinaryFunctionOfObject = function (const Value0,Value1:_ValueType):Boolean Of Object;

  TRandomGenerateFunction         = function (const Range: Integer):integer; //0<=result<Range
  TRandomGenerateFunctionOfObject = function (const Range: Integer):integer Of Object;

type
  _TAlgorithms = class(TObject)
  public

    //返回两个迭代器之间的元素个数
    class function Distance(const ItBegin,ItEnd:_IIterator):integer; overload;

    //返回两个元素列是否相等
    class function IsEquals(const ItBegin0,ItEnd0,ItBegin1,ItEnd1:_IIterator):boolean; overload;

    //遍历
    class procedure ForEach(const ItBegin,ItEnd:_IIterator;const VisitProc:TVisitProc); overload;
    class procedure ForEach(const ItBegin,ItEnd:_IIterator;const VisitProc:TVisitProcOfObject); overload;

    //查找  //失败返回位置等于ItEnd
    class function Find(const ItBegin,ItEnd:_IIterator;const Value:_ValueType):_IIterator; overload;
    class function FindIf(const ItBegin,ItEnd:_IIterator;const TestFunction:TTestFunction):_IIterator; overload;
    class function FindIf(const ItBegin,ItEnd:_IIterator;const TestFunction:TTestFunctionOfObject):_IIterator; overload;
    class function FindIf(const ItBegin,ItEnd:_IIterator;const Value:_ValueType;const TestBinaryFunction:TTestBinaryFunction):_IIterator; overload;
    class function FindIf(const ItBegin,ItEnd:_IIterator;const Value:_ValueType;const TestBinaryFunction:TTestBinaryFunctionOfObject):_IIterator; overload;

    //统计元素个数
    class function Count(const ItBegin,ItEnd:_IIterator;const Value:_ValueType):integer; overload;
    class function CountIf(const ItBegin,ItEnd:_IIterator;const TestFunction:TTestFunction):integer;overload;
    class function CountIf(const ItBegin,ItEnd:_IIterator;const TestFunction:TTestFunctionOfObject):integer;overload;

    //寻找子串
    class function Search(const ItBegin,ItEnd,ItBeginSub,ItEndSub:_IIterator):_IIterator; overload;
    class function Search(const ItBegin,ItEnd,ItBeginSub,ItEndSub:_IIterator;const TestBinaryFunction:TTestBinaryFunction):_IIterator; overload;
    class function Search(const ItBegin,ItEnd,ItBeginSub,ItEndSub:_IIterator;const TestBinaryFunction:TTestBinaryFunctionOfObject):_IIterator; overload;

    //最值
    class function MinElement(const ItBegin,ItEnd:_IIterator):_IIterator; overload;
    class function MinElement(const ItBegin,ItEnd:_IIterator;const TestBinaryFunction:TTestBinaryFunction):_IIterator; overload;
    class function MinElement(const ItBegin,ItEnd:_IIterator;const TestBinaryFunction:TTestBinaryFunctionOfObject):_IIterator; overload;
    class function MaxElement(const ItBegin,ItEnd:_IIterator):_IIterator; overload;
    class function MaxElement(const ItBegin,ItEnd:_IIterator;const TestBinaryFunction:TTestBinaryFunction):_IIterator; overload;
    class function MaxElement(const ItBegin,ItEnd:_IIterator;const TestBinaryFunction:TTestBinaryFunctionOfObject):_IIterator; overload;

    //////////////////////////////////////////////

    //交换值
    class procedure SwapValue(const It0,It1:_IIterator);overload;
    class procedure SwapValue(const It0:_IIterator;const Index0: integer;const It1:_IIterator;const Index1: integer);overload;

    //将ItBeginSrc,ItEndSrc区间内的数据拷贝到ItBeginDest开始的区域中
    class procedure Copy(const ItBeginSrc,ItEndSrc,ItBeginDest:_IIterator); overload;

    //利用TansfromFunction函数进行转换
    class procedure Tansfrom(const ItBegin,ItEnd:_IIterator;const TansfromFunction:TTansfromFunction);  overload;
    class procedure Tansfrom(const ItBegin,ItEnd:_IIterator;const TansfromFunction:TTansfromFunctionOfObject);overload;
    class procedure Tansfrom(const ItBeginSrc,ItEndSrc,ItBeginDest:_IIterator;const TansfromFunction:TTansfromFunction);  overload;
    class procedure Tansfrom(const ItBeginSrc,ItEndSrc,ItBeginDest:_IIterator;const TansfromFunction:TTansfromFunctionOfObject);overload;
    class procedure Tansfrom(const ItBeginSrc0,ItEndSrc0,ItBeginSrc1,ItBeginDest:_IIterator;const TansfromFunction:TTansfromBinaryFunction);  overload;
    class procedure Tansfrom(const ItBeginSrc0,ItEndSrc0,ItBeginSrc1,ItBeginDest:_IIterator;const TansfromFunction:TTansfromBinaryFunctionOfObject);overload;

    //交换区间
    class procedure SwapRanges(const ItBegin0,ItEnd0,ItBegin1:_IIterator);
  
    //替换元素
    class function Replace(const ItBegin,ItEnd:_IIterator;const OldValue,NewValue:_ValueType):integer; overload;
    class function ReplaceIf(const ItBegin,ItEnd:_IIterator;const TestFunction:TTestFunction;const NewValue:_ValueType):integer;overload;
    class function ReplaceIf(const ItBegin,ItEnd:_IIterator;const TestFunction:TTestFunctionOfObject;const NewValue:_ValueType):integer;overload;
    //write ReplaceCopy() ?

    //填充区间
    class procedure Fill(const ItBegin,ItEnd:_IIterator;const Value:_ValueType);overload;
    class procedure Fill(const ItBegin:_IIterator;const N:integer;const Value:_ValueType);overload;
    class procedure Generate(const ItBegin,ItEnd:_IIterator;const GenerateFunction:TGenerateFunction);overload;
    class procedure Generate(const ItBegin:_IIterator;const N:integer;const GenerateFunction:TGenerateFunction);overload;
    class procedure Generate(const ItBegin,ItEnd:_IIterator;const GenerateFunction:TGenerateFunctionOfObject);overload;
    class procedure Generate(const ItBegin:_IIterator;const N:integer;const GenerateFunction:TGenerateFunctionOfObject);overload;

    //移除元素  //返回值(result)表示Value在[ItBegin,result)区间内被移除了
    class function Remove(const ItBegin,ItEnd:_IIterator;const Value:_ValueType):_IIterator;overload;
    class function RemoveIf(const ItBegin,ItEnd:_IIterator;const TestFunction:TTestFunction):_IIterator;overload;
    class function RemoveIf(const ItBegin,ItEnd:_IIterator;const TestFunction:TTestFunctionOfObject):_IIterator;overload;

    /////////////////////////////////////////////////////

    //反转
    class procedure Reverse(const ItBegin,ItEnd:_IIterator); overload;

    //随机重排
    class procedure RandomShuffle(const ItBegin,ItEnd:_IIterator); overload;
    class procedure RandomShuffle(const ItBegin,ItEnd:_IIterator;const RandomGenerateFunction:TRandomGenerateFunction); overload;
    class procedure RandomShuffle(const ItBegin,ItEnd:_IIterator;const RandomGenerateFunction:TRandomGenerateFunctionOfObject); overload;

    //排序
    class procedure Sort(const ItBegin,ItEnd:_IIterator); overload;
    class procedure Sort(const ItBegin,ItEnd:_IIterator;const TestBinaryFunction:TTestBinaryFunction); overload;
    class procedure Sort(const ItBegin,ItEnd:_IIterator;const TestBinaryFunction:TTestBinaryFunctionOfObject); overload;

    class function  IsSorted(const ItBegin,ItEnd:_IIterator):boolean; overload;
    class function  IsSorted(const ItBegin,ItEnd:_IIterator;const TestBinaryFunction:TTestBinaryFunction):boolean; overload;
    class function  IsSorted(const ItBegin,ItEnd:_IIterator;const TestBinaryFunction:TTestBinaryFunctionOfObject):boolean; overload;

    class function  BinarySearch(const ItBegin,ItEnd:_IIterator;const Value:_ValueType):_IIterator; overload;
    class function  BinarySearch(const ItBegin,ItEnd:_IIterator;const Value:_ValueType;const TestBinaryFunction:TTestBinaryFunction):_IIterator; overload;
    class function  BinarySearch(const ItBegin,ItEnd:_IIterator;const Value:_ValueType;const TestBinaryFunction:TTestBinaryFunctionOfObject):_IIterator; overload;
    class function  LowerBound(const ItBegin,ItEnd:_IIterator;const Value:_ValueType):_IIterator; overload;
    class function  LowerBound(const ItBegin,ItEnd:_IIterator;const Value:_ValueType;const TestBinaryFunction:TTestBinaryFunction):_IIterator; overload;
    class function  LowerBound(const ItBegin,ItEnd:_IIterator;const Value:_ValueType;const TestBinaryFunction:TTestBinaryFunctionOfObject):_IIterator; overload;

    //堆操作
    class procedure MakeHeap(const ItBegin,ItEnd:_IIterator);overload;
    class procedure MakeHeap(const ItBegin,ItEnd:_IIterator;const TestBinaryFunction:TTestBinaryFunction);overload;
    class procedure MakeHeap(const ItBegin,ItEnd:_IIterator;const TestBinaryFunction:TTestBinaryFunctionOfObject);overload;
    class procedure PushHeap(const ItBegin,ItEnd:_IIterator);overload; //push value in [ItBegin,ItEnd-1) ,the Value at (ItEnd-1);
    class procedure PushHeap(const ItBegin,ItEnd:_IIterator;const TestBinaryFunction:TTestBinaryFunction);overload;
    class procedure PushHeap(const ItBegin,ItEnd:_IIterator;const TestBinaryFunction:TTestBinaryFunctionOfObject);overload;
    class procedure PopHeap(const ItBegin,ItEnd:_IIterator);overload;//pop max Value to (ItEnd-1);
    class procedure PopHeap(const ItBegin,ItEnd:_IIterator;const TestBinaryFunction:TTestBinaryFunction);overload;
    class procedure PopHeap(const ItBegin,ItEnd:_IIterator;const TestBinaryFunction:TTestBinaryFunctionOfObject);overload;
    class procedure SortHeap(const ItBegin,ItEnd:_IIterator);overload;
    class procedure SortHeap(const ItBegin,ItEnd:_IIterator;const TestBinaryFunction:TTestBinaryFunction);overload;
    class procedure SortHeap(const ItBegin,ItEnd:_IIterator;const TestBinaryFunction:TTestBinaryFunctionOfObject);overload;

  end;

{$endif } // __Algorithms_inc_h_