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
One example: [2,4,5,6,4,8,9,10], target=10
Solution is here: [2,8]
Explanation: 2 and 8 are present in the list and sum to 10 which was the target sum

Now, solve this: [11, 8, 15, 48, 5, 42, 10, 29, 40, 45, 2, 21, 23, 33, 20, 44, 37, 1, 24, 35], target=61
Solution:
[40, 21]