Top k most frequent in JavaScript
JavaScript interview exercise on Practical, difficulty 3 of 3. Solve it in the editor beside a worked example; the tests run the moment you do.
Write topKFrequent(words, k) that returns the k most frequent words, most frequent first; ties broken alphabetically.
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.