Parse a query string in TypeScript
TypeScript interview exercise on Practical, difficulty 2 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 parseQuery(str) that turns "page=2&q=core%20platform&flag" into { page: "2", q: "core platform", flag: "" }. Values are decoded; a key without = gets "". An empty string returns {}.
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.