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iOS Swift 2.0 Collections and Control Flow Control Flow With Loops Working with Loops

Posted by sterlingpitt
sterlingpitt
492 Points

Need help with challenge #2

I understand step one and completed that step correctly. I'm confused by what is being asked in this second part... Could someone explain?

while.swift 
let numbers = [2,8,1,16,4,3,9]
var sum = 0
var counter = 0

// Enter your code below

while counter < numbers.count { 
sum += numbers[counter]
counter++}

sum += [counter]

1 Answer

Michael Reining
Michael Reining
10,101 Points
Michael Reining
Michael Reining
10,101 Points

Hi Stephanie,

Your code is correct. Just remove the last line.

You are already updating the sum inside the while loop.

let numbers = [2,8,1,16,4,3,9]
var sum = 0
var counter = 0

// Enter your code below

while counter < numbers.count {
    sum += numbers[counter] // compute sum
    counter++
}

To test this, you can just look at the results in the Playground in Xcode.

I hope that helps,

Mike

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