instruction:
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
question:
[36, 19, 21, 42, 8, 31, 25, 43, 4, 2, 13, 3, 1, 11, 17, 10, 45, 12, 30, 23], target=29
answer:
[21, 8]


question:
[39, 30, 17, 47, 19, 23, 44, 5, 20, 1, 8, 42, 48, 11, 34, 6, 26, 13, 18, 4], target=43
answer:
[23, 20]


question:
[4, 49, 44, 23, 41, 21, 38, 13, 28, 25, 12, 18, 39, 43, 24, 16, 3, 26, 14, 1], target=79
answer:

[41, 38]


