You are given a list of integers and an integer target, return a list of a pair of numbers in any order such that they add up to target. If there is no such pair of numbers, then return an empty list

[EX Q]: [23, 31, 4, 40, 8, 2, 1, 19, 5, 26, 11, 9, 30, 12, 16, 35, 27, 29, 48, 25], target=18
[EX A]: [2, 16]

[EX Q]: [42, 3, 48, 31, 46, 24, 18, 25, 36, 43, 11, 22, 12, 37, 49, 44, 38, 2, 13, 23], target=76
[EX A]: []

[EX Q]: [11, 8, 15, 48, 5, 42, 10, 29, 40, 45, 2, 21, 23, 33, 20, 44, 37, 1, 24, 35], target=61
[EX A]:
[40, 21]

