Instructions: 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
Input: [35, 41, 6, 12, 18, 23, 2, 21, 46, 25, 5, 40, 48, 43, 49, 20, 26, 30, 27, 17], target=19
Output:
[2, 17]