Sum Distinct Items

August 20, 2019

We have an interview question today:

In a list of integers, find the sum of the integers that appear only once. For instance, in the list [4 2 3 1 7 4 2 7 1 7 5], the integers 1, 2, 4 and 7 appear more than once, so they are excluded from the sum, and the correct anser is 3 + 5 = 8.

Your task is to write a program to find the sum of the distinct integers in a list. When you are finished, you are welcome to read or run a suggested solution, or to post your own solution or discuss the exercise in the comments below.

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