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Shuffle  a stringlist, how to?

Posted on 2013-12-08
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Last Modified: 2013-12-09
Hello Guys,

is there any function in Delphi where I can shuffle a stringlist? If no, do you have one that could me send?

I Use Delphi XE4

Consider my SL with this:

sl.Add('one');
sl.Add('two');
sl.Add('three');
sl.Add('four');
sl.Add('five');
sl.Add('six');
sl.Add('seven');
sl.Add('eight');
sl.Add('nine');
sl.Add('ten');

How can I shuffle it?

Thanks
Alex
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Question by:hidrau
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2 Comments
 
LVL 31

Accepted Solution

by:
Marco Gasi earned 2000 total points
ID: 39704614
Try this:

 procedure Shuffle(list : TStringList) ;
 var
   randomIndex: integer;
   cnt: integer;
 begin
   Randomize;
   for cnt := 0 to list.Count -1 do
   begin
     randomIndex := Random(-cnt + list.Count) ;
     list.Exchange(cnt, cnt + randomIndex) ;
   end;
 end;

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Author Closing Comment

by:hidrau
ID: 39706617
Thanks very much.
0

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