You’re given an array of integers. Write a function that returns a pair of numbers such that they sum up to zero. — You can assume there will be exactly 1 solution. Each element in the array can only be used once. Example: Array of integers is [2, 7, 9, -2].
The pair that sums up to 0 is (2, -2). Input:
A list of numbers, separated by space. 2 7 9 -2 …