Looping In Reverse in Scala in Scala

A for loop can also count backwards, as long as we define the right conditions. For example:

for (i <- 7 to 3 by -1) {
	println(i)
}

The output of this code is:

7
6
5
4
3

Let's break down this code:

• The range starts at 7.

• to 3 means the range includes 3.

• by -1 means we decrease our number by 1 every time.

Assignment

Let's print all numbers from 5 through -5 in decreasing order.

Hint
Look at the examples above if you get stuck.