通过 TStringList 给系列数字倒排序

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

{写一个按数字大小倒排序的函数}
function DescCompareInt(List: TStringList; I1, I2: Integer): Integer;
begin
  I1 := StrToIntDef(List[I1], 0);
  I2 := StrToIntDef(List[I2], 0);
  Result := I2 - I1;
end;

procedure TForm1.Button1Click(Sender: TObject);
var
  List: TStringList;
begin
  List := TStringList.Create;
  List.CommaText := '5,21,4,65,87,1,3';
  List.CustomSort(DescCompareInt); {排序时调用那个函数}
  ShowMessage(List.Text);          {87 65 21 5 4 3 1}
  List.Free;
end;

end.


轉貼至 https://www.cnblogs.com/del/archive/2008/04/07/1141195.html