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Nick Johnson
2,345 PointsWhy, when setting the upper bound for the random number generator, do we not have to do colors.count - 1?
Maybe I'm wrong in thinking colors.count == 7 (in this particular case). But if that is the case, if we were to return colors[7], wouldn't that cause an out of bounds error?
2 Answers
Jennifer Nordell
Treehouse TeacherHi there! You're right, it would. However, the nextInt returns a number between 0(inclusive) and the upperBound number (exclusive). So, in this case you will only ever get the numbers 0-6 as 7 is not included.
Here's some documentation
This is simply how the upperBound in the nextInt works.
Hope this helps!
Nick Johnson
2,345 PointsGot it, thanks Jennifer!