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unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    ListBox1: TListBox;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    procedure Button3Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);

  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button3Click(Sender: TObject);
begin
close
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
listbox1.clear;
end;

procedure TForm1.Button1Click(Sender: TObject);
var a, b, c, d, e, f: integer;
begin
randomize;
a:=Random(100)+1;
b:=Random(100)+1;
c:=Random(100)+1;
d:=Random(100)+1;
e:=Random(100)+1;
f:=Random(100)+1;

ListBox1.Items.Add(IntToStr(a));
ListBox1.Items.Add(IntToStr(b));
ListBox1.Items.Add(IntToStr(c));
ListBox1.Items.Add(IntToStr(d));
ListBox1.Items.Add(IntToStr(e));
ListBox1.Items.Add(IntToStr(f));

end;

procedure TForm1.Button4Click(Sender: TObject);
var min, pos, i: integer;
begin
listbox1.clear;
with listbox1 do
 begin
 min:=StrToInt(Items[0]);
 Pos:=0    ;
 for i:=1 to Items.count-1 do
  if StrToInt(Items[i]) < min then
   begin
   min:=StrToInt(Items[i]);
   pos:=i;
   Listbox1.Items.add(IntToStr(min));
   end;
  end;
end;


end.                    

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procedure Doppelt;
var i,p:integer;
begin
  for i:=1 to Form2.ListBox1.Items.Count do
    for p:=i+1 to Form2.ListBox1.Items.Count do
      if not (p=Form2.ListBox1.Items.Count) then
        if Form2.ListBox1.Items[i]=Form2.ListBox1.Items[p] then Form2.ListBox1.Items.Delete(p);
end;