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
Neymat Kakar
iOS Development Techdegree Student 786 Pointscollections and control flow
Now that we have the while loop set up, it's time to compute the sum! Using the value of counter as an index value, retrieve each value from the array and add it to the value of sum.
For example: sum = sum + newValue. Or you could use the compound addition operator sum += newValue where newValue is the value retrieved from the array.
let numbers = [2,8,1,16,4,3,9]
var sum = 0
var counter = 0
// Enter your code below
numbers.count
while counter < numbers.count
{
print(numbers[counter])
counter += 1
}
var newValue = numbers[newValue]
sum = sum + newValue
1 Answer
Alexander La Bianca
15,959 PointsHi,
You almost got it. You need to move the computing of the sum part inside of the while loop like I did below. var newValue will be 2 at first Then the sum computation will be sum = 0 + 2 So sum will be 2 Then increase the counter by 1 Then keep going - newValue will be 8 sum = 2 + 8 Increase counter by 1 And so on until you reach the end of the array.
let numbers = [2,8,1,16,4,3,9]
var sum = 0
var counter = 0
// Enter your code below
numbers.count
while counter < numbers.count
{
var newValue = numbers[newValue]
sum = sum + newValue
counter += 1
}
Neymat Kakar
iOS Development Techdegree Student 786 PointsNeymat Kakar
iOS Development Techdegree Student 786 PointsBelow is the code which is incomplete: let numbers = [2,8,1,16,4,3,9] var sum = 0 var counter = 0
// Enter your code below numbers.count while counter < numbers.count { print(numbers[counter]) counter += 1 }