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Re: Sorting strings


  Themis Matsoukas wrote:
> Sorting this list of strings
>
> {"a1", "a2", "a20", "a12"} // Sort
>
> I get
>
> {"a1", "a12", "a2", "a20"}
>
> but I would like the numerals to be sorted as numbers, i.e., as
>
> {"a1", "a2", "a12",  "a20"}
>
> Is this possible or do I have to rename "a1" into "a01" etc?
>

Lst = {"a1", "a2", "a20", "a12"};
Lst[[Ordering[ToExpression[StringDrop[#, 1] & /@ Lst]]]]

Out = {"a1", "a2", "a12", "a20"}

-- 
  Costa



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