Forked and approved

cool!!!

I think that may be the intended lesson of the kata (locality of reference for row-major matrices which makes more efficient use of the cache)

Fixed

Love this solution! Using upto and downto in the context of a lift is just delightful.

A small improvement (arguably) could be to change stop to a proper bool throughout and then change

stop = 0
lift.reject!{|n| n == floor && (stop = 1)}

to

stop = lift.delete(floor)

The upper bound really should be in the description.

Uuuh, slick solution. I like it a lot.

Replaced with SVG (thanks to awesomead again)

Seems like image links are dead.

Hello!

I updated the description, I hope it is clearer now.

Thanks!

Please make python tests not useless - obligatory solution.

Feel free to fork it and do improvements, nowadays I don't have time to do this.