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Sum of two lowest positive integers
Create a function that returns the sum of the two lowest
positive numbers given an array of minimum 4 positive integers.
No floats or non-positive integers will be passed.
For example:
when an array is passed like
[19, 5, 42, 2, 77], the output should be 7.[10, 343445353, 3453445, 3453545353453]should return 3453455.