Group anagrams in TypeScript
TypeScript interview exercise on Objects, difficulty 3 of 3. Solve it in the editor beside a worked example, or cold in Interview mode with the example hidden; 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. Interview mode hides the example: solve it from memory, without the hint or the solution, and it counts as solved cold. Progress is saved in your browser, and in your account if you sign in.