Set operations in C#
C# interview exercise on Dictionaries & Sets, difficulty 1 of 3. Solve it in the editor beside a worked example; the tests run the moment you do.
Write OnlyInOne(a, b) that returns the values that appear in exactly one of the two lists, sorted, each once.
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.