Solved Programming Chalenges used to shortlist Candidates for Engineering Positions at various Tech-Firms. In case you are applying in one of them, better get cracking! May the Source be with you! List of Challenges ------------------ Facebook - http://www.facebook.com/careers/puzzles.php - https://facebook.interviewstreet.com/ Spotify - http://www.spotify.com/int/jobs/tech/ Greplin - http://challenge.greplin.com/ Yodle - http://www.yodlecareers.com/puzzles/ Evernote - https://evernotechallenge.interviewstreet.com/ Quora - http://www.quora.com/challenges/ Dropbox - http://www.dropbox.com/jobs/challenges/ Amazon - https://amazon.interviewstreet.com/ Box - https://box.interviewstreet.com/ Palantir - http://www.palantir.com/challenge/ - https://palantir.interviewstreet.com/ Pocket Gems - http://pocketgems.com/engineering/questions - https://pocketgems.interviewstreet.com/ Stripe - http://stripe.com/jobs Thumbtack - http://www.thumbtack.com/challenges ITA Software - http://www.itasoftware.com/careers/puzzle_archive.html Rapleaf - https://www.rapleaf.com/about-us/careers/challenge-questions/ Interviewstreet - https://www.interviewstreet.com/challenges/ CodeEval - http://www.codeeval.com/