Squares of the even numbers in Java
Java interview exercise on Streams & lambdas, difficulty 1 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 evenSquares(nums) that returns the squares of the even numbers of nums, in order, as a List<Integer>, using a stream pipeline (filter, map, toList).
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.