Whitepages Software Engineer Android interview questions

1st a phone interview with the recruiter after the emails regarding scheduling. The recruiter called in and the discussion about interests, opportunities being looked for was done. Then a coding assessment was setup on HackerRank. ArrayHopper, but with different user stories 'Dungeoneering'. Dragon flying and minimum hops was to be determined so that it escapes. Time available was 4 hrs. Coded genuinely and checked for test cases. Couldn't pass all test cases, guess they were the border test cases.