unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Memo1: TMemo;
    StringGrid1: TStringGrid;
    Button1: TButton;
    Button2: TButton;
    Edit1: TEdit;
    Button3: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var input,str:string; i:integer;
begin
  str:='';
  input:=uppercase(edit1.Text);
  for i := 1 to length(input) do
    if pos(input[i],str) = 0
      then str:=str+input[i];
  edit1.Text:=str;
end;


procedure TForm1.Button2Click(Sender: TObject);
var i,count:integer;
begin
for i := 65 to 90 do
  stringgrid1.Cells[i-65,0]:=chr(i);

for i := 1 to length(edit1.text) do
stringgrid1.cells[i-1,1]:=edit1.text[i];

count:=0;
for i:= 65 to 90 do begin
  if pos(chr(i),edit1.text) = 0
    then begin
      stringgrid1.Cells[length(edit1.text)+count,1]:=chr(i);
      count:=count+1;
    end;
end;
end;

procedure TForm1.Button3Click(Sender: TObject);
var
  i,count:integer;
  text:string;
begin
text:=uppercase(memo1.text);
for i := 1 to length(text) do begin
if (ord(text[i]) >= 65) and (ord(text[i]) <= 90) then begin
    count:=ord(text[i])-65;
    text[i]:=stringgrid1.cells[count,1][1];
  end;
end;
memo1.text:=text;
end;

end.