[Chicken-users] Re: Chase's Sequence

[Kon Lovett]

To whom it may concern,

Sorry for taking so long to reply to the queries.

I have updated the wiki entry to reflect a better separation of  
concerns - the basic algorithm vs. index swapping. An example is  
included.

The algorithm generates the length r combinations for a set of n  
elements.
A bit-set indicates which elements are in the current combination.

Note that the algorithm generates the combinations, not the  
permutations! In a permutation order is important - {1 2 3} is not {3  
2 1} but they are equivalent combinations. So '(make-chase-sequence  
52 5)' will generate all possible card "hands".

See http://en.wikipedia.org/wiki/Combination

Best Wishes,
Kon