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
Example: [2,4,5,6,4,8,9,10], target=10
Example solution: [2,8]
Example explanation: 2 and 8 are present in the list and sum to 10 which was the target sum

Problem: [34, 24, 1, 33, 20, 13, 21, 23, 11, 6, 26, 31, 38, 35, 40, 2, 4, 3, 27, 25], target=68

Solution: [33, 35]