[racket] Rosetta Sokoban Solution

Thank you for this effort. 

This is not a criticism of your code but I will say that Racket code looks dense and overbearing compared to PicoLisp, Python, and Tcl. Hmph. 




On Jun 10, 2013, at 12:34 PM, Sean Kanaley wrote:

> The rather empty page on Sokoban now has a Racket solution.  The creator is proud to announce it's the fastest solution (though a couple didn't give run times) at ~0.1 seconds.  My thanks to Ryan Culpepper for making the binary heap that made this possible.
> 
> http://rosettacode.org/wiki/Sokoban#Racket
> 
> Also, Racket is one short of Python in popularity.  If someone could do two more we'll defeat those lazy Python programmers, probably with less work!
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