(First problem that I was able to solve without looking at the solution!)

Write a method that takes in an integer ‘num’ and returns the sum of all integers between zero and num, up to and including ‘num’.

Basically, you want to write a simplified version of i + (i+1) + (i+2)…(i+num).

This doesn’t seem to take into account negative integers though?

Second time doing this problem, I got this:

Not as simple as my first one but it also works.

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