New Concepts

Question 1

(1..5)

Answer 1

include 5, 1-5

Question 2

(1…5)

Answer 2

exclude 5, 1-4

Question 3

for-loop vs while-loop

Answer 3

A for-loop can only iterate (loop) “over” collections of things. A while-loop can do any kind of iteration (looping) you want. However, while-loops are harder to get right and you normally can get many things done with for-loops.