Sort by two keys in Java
Java interview exercise on Streams & lambdas, difficulty 2 of 3. Solve it in the editor beside a worked example; the tests run the moment you do.
Given record Person(String name, int age), write sortPeople(people) that returns the people sorted by age descending and, for the same age, by name ascending, as a new list. Build the comparator with Comparator.comparingInt, reversed() and thenComparing.
Each exercise pairs a worked example with a twin problem to solve in a real editor; the tests run the moment you do. Progress is saved in your browser, and in your account if you sign in.