Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trial
aj picard
1,258 PointsNot sure what they're asking me to do here...
They didn't really teach me how to compute this from the lesson I feel like can someone help?
let numbers = [2,8,1,16,4,3,9]
var sum = 0
var counter = 0
while counter < 6 {
print("Terminate")
counter += 1
sum += counter
}
// Enter your code below
1 Answer
Taylor Smith
iOS Development Techdegree Graduate 14,153 Pointshi aj picard! A couple things. If you want to add up each index of the "numbers" array, you would have to go through each index and add them together. That's actually what the counter is for. Having "counter" start at 0, you're going to use that as your index for your "numbers" array. So, by saying numbers[counter], and then increasing that counter by 1 each time, you're essentially saying: numbers[0], numbers [1], numbers[2], etc. Now, you're going to want to store these numbers in a placeholder variable called newValue:
var newValue = numbers [counter]
then you want to add this to your "sum" variable like this:
sum += newValue
then of course you need to up your counter:
counter += 1
so your completed code should like this:
let numbers = [2,8,1,16,4,3,9]
var sum = 0
var counter = 0
while counter < numbers.count {
var newValue = numbers[counter]
sum += newValue
counter += 1
}