Write merge_sorted(a, b) that merges two already-sorted lists into one sorted list without using sort or sorted.
merge_sorted([1, 4, 9], [2, 3, 10]) → [1, 2, 3, 4, 9, 10]
merge_sorted([], [1]) → [1]
Submit runs 4 tests, including hidden edge cases.
Each hint gives a little more help. Try on your own first.
Run your code to see the output here.