Without above if condition also, examples mentioned in this unit are giving correct output.

I think the above is for checking negative values. But I also do not understand what this checks exactly.

(Math.abs(targetDiff) == Math.abs(smallestDifference)

I think this means that if the targetDiff or smallestDifference is negative then we compare the absolu...

This if condition is checking that if targetDiff and smallestDifference absolute values are equal, then, they would check to see if targetDiff is a larger number than smallestDifference because it would be the value with the smaller sum. (It's confusing because the nami...