Perguntas de entrevista de vagas de IOS Software Developer da empresa Buildots

list of users { aga,name,city,isActive} imp the next functions: (all prototypes are given ) 1. func that returns only active users 2. func that returns map of user names and cities (grouping) 3. func that returns map of user names and cities (grouping) sorted by user age 4. func that returns a map of the city and the oldest user name