function StringFill(S, T: String; iPos: Integer): String; begin Result := Copy(S, 1, iPos - 1) + T + Copy(S, iPos + Length(T) - 1, Length(S) - Length(T) - iPos + 1); end;procedure TForm1.Button1Click(Sender: TObject); begin ShowMessage (StringFill('0000000000', '123', 3)); ShowMessage (StringFill('0000000000', 'abc', 7)); end;
Procedure ReplaceString(Var Source:string;Dest:string;Num:integer); Var i:integer; Len:Integer; begin Len:=Length(Dest); Source:=Copy(Source,1,Num-1)+Dest+Copy(Source,Num+Len,Length(Source)-Num-Len+1); end;
begin
s1:='0000000000';
s2:='12';
s3:='ABC';
s:=s1;
s:=s2+copy(s,Length(s2),Length(s)-Length(s2));
s:=s2+s3+copy(s,Length(s2)+Length(s3),Length(s)-Length(s2)-Length(s3));
ShowMessage(s);
end;
procedure TForm1.Button1Click(Sender: TObject);
var
s,s2,s3,s4:string;
begin
s:='0000000000';
s2:='12';
s3:='ABC';
s4:=s2+s3;
edit1.Text:=new_str(s,s4);end;function TForm1.NEW_STR(s, s1: string): string;
begin
Result:=s1+copy(s,Length(s1),maxint);
end;
var
s,s2,s3,s4,s5:string;
begin
s:='0000000000';
s2:='12';
s3:='ABC';
s4:=s2+s3;
s5:=s4+copy(s,Length(s4),maxint);
showMessage(s5)
end;
const
s1='0000000000';
s2='12';
s3='ABC';
var
s4: string;
begin
s4 := s2+s3+copy(s1,length(s2+s3),length(s1));
showmessage(s4);
end;
如:有一个两个长度的字附串,来替换别一个字附串的长度的第三、四位字附串。
S:='0000000000'
比如S1='123',要从S的第三位开始替换那么替换后的字附S为0012300000;.
比如S1='abc',要从S的第七位开始替换那么替换后的字附S为000000abc0;
var
s1,s2:string;
begin
s1:='00000000';
s2:='123';
delete(s1,3,2);
Insert(s2,s1,3);
ShowMessage(s1);
end;
cxTextEdit1.Text:=copy(cxTextEdit1.Text,1,3)+'ABC'+copy(cxTextEdit1.Text,7,10)
除了这样还有没有其办法。
function StringFill(S, T: String; iPos: Integer): String;
begin
Result := Copy(S, 1, iPos - 1) + T + Copy(S, iPos + Length(T) - 1, Length(S) - Length(T) - iPos + 1);
end;procedure TForm1.Button1Click(Sender: TObject);
begin
ShowMessage (StringFill('0000000000', '123', 3));
ShowMessage (StringFill('0000000000', 'abc', 7));
end;
Var
i:integer;
Len:Integer;
begin
Len:=Length(Dest);
Source:=Copy(Source,1,Num-1)+Dest+Copy(Source,Num+Len,Length(Source)-Num-Len+1);
end;