Group anagrams in JavaScript
JavaScript interview exercise on Objects, difficulty 3 of 3. Solve it in the editor beside a worked example; the tests run the moment you do.
Write groupAnagrams(words) that groups words that are anagrams of each other. Return an array of groups, each group in input order, groups ordered by first appearance.
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.