Here is a Racket (/Scheme) version of the JavaScript solution with a thorough explanation. http://pasterack.org/pastes/80529 http://pasterack.org/pastes/80529

Here is a Racket (/Scheme) version of the JavaScript solution with a thorough explanation. http://pasterack.org/pastes/80529 http://pasterack.org/pastes/80529 Note that this solution is using a standard imperative style, with a loop over that narrows down the location of the sought of element in two subvectors of a and b.