[racket] question about permutation

You just wrote down the permutations of the set {1, 2, 3}. What was your thought process in producing this list?

Sent from my iPad

On Feb 13, 2011, at 4:42 PM, Xiaojian Wang <xiaoj7 at hotmail.com> wrote:

> I want to make a permutation of a word, for example 1 2 3
> 
> it should return 
> 1 2 3
> 1 3 2
> 2 1 3
> 2 3 1
> 3 1 2
> 3 2 1
> 
> or 
> (list (list 1 2 3)
>       (list 1 3 2)
>         .
>         .
>         .
> 
> Could you help me with this?
> 
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