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: [39, 23, 7, 28, 26, 41, 45, 31, 19, 22, 43, 14, 48, 44, 18, 5, 8, 40, 12, 37], target=78

SOLUTION: [41, 37]

PROBLEM: [14, 33, 21, 48, 9, 39, 23, 27, 18, 42, 41, 24, 10, 32, 19, 49, 46, 30, 11, 45], target=80

SOLUTION: [39, 41]

PROBLEM: [35, 27, 26, 16, 8, 44, 33, 38, 42, 37, 28, 43, 39, 25, 12, 14, 31, 24, 7, 49], target=57

SOLUTION:
[43, 14]