TASK DEFINITION: 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
PROBLEM: [24, 29, 9, 12, 2, 18, 11, 7, 31, 6, 30, 14, 3, 41, 13, 33, 21, 47, 45, 4], target=22

SOLUTION: [9, 13]

PROBLEM: [49, 45, 41, 6, 15, 30, 44, 32, 16, 19, 8, 22, 43, 25, 13, 18, 24, 7, 42, 35], target=83

SOLUTION: [41, 42]

PROBLEM: [15, 1, 18, 48, 6, 31, 19, 22, 5, 16, 30, 43, 17, 46, 41, 32, 45, 40, 14, 26], target=47

SOLUTION:
[31, 16]