AstraZeneca Interview Questions

You are given a list of integers called numbers. Write a function to return any subset of numbers where the elements sum to zero and that does not contain the number 0.

If there are no combinations of elements that sum to zero, return an empty list.

Example 1:

Input:

numbers = [1,-2,6,7,1]

Output:

def zero_sum(numbers) -> [1,-2,1] # only possible combination

Example 2:

Input:

numbers = [0,0,1,3,6,-4,-1]

Output:

def zero_sum(numbers) -> [1,3,-4]

or

def zero_sum(numbers) -> [1,-1]

or any other subset that sums to zero and doesn’t include 0.