How can I convert array of string to string? Or any idea else?
I am doing it like this:
var
s:string;
i:integer;
begin
for i:=1 to 10000 do
begin
if (i mod 2)=0 then
s:='a'+s
else
s:='b'+s;
end;
end;
And as you see i
is going to large number 1000 or 10000 or 10000 so it means 10000 times I have to do this, how can I do this very short time..Using array? Please an example code..
SetLength(s, n);
for i := 1 to n do
s[i] := ...
Is the idiom you need.
Your code is slow because it performs memory allocation and copying on every iteration. This approach of pre-allocating the buffer avoids that.