Preguntas de entrevista de MatchPoint Solutions

Simple coding challenge on hacker rank. Then an interview with the client,that interview may vary depending on the client

HackerRank test with 2 problems: get a phone country code from a country by querying a countries API (using java.net.* libraries) and the other problem was to implement a RateLimiter for an endpoint (need to synchronize the counter to solve all test cases).