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: [19, 4, 24, 14, 6, 18, 42, 5, 47, 16, 8, 28, 30, 32, 49, 3, 35, 9, 33, 27], target=19

SOLUTION: [14, 5]

PROBLEM: [22, 23, 45, 37, 25, 10, 2, 18, 17, 20, 3, 34, 13, 21, 28, 39, 31, 43, 33, 40], target=100

SOLUTION: []

PROBLEM: [31, 29, 8, 22, 7, 2, 48, 35, 12, 13, 16, 34, 17, 40, 1, 45, 43, 39, 20, 26], target=39

SOLUTION:
[31, 8]