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procedure TForm1.Button2Click(Sender: TObject);
var
arr: array of Integer;
i,j: Integer;
stra,strb : string;
begin
setlength(arr,4);
for i := 0 to 3 do
begin
arr[i] := i+1;
end;
for i := 0 to high(arr) do
begin
stra := '';
for j := 0 to i do
begin
stra := stra + '*';
end;
strb := strb + stra + #13;
end;
ShowMessage(strb);
end;
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