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

Posted by che Robinson
che Robinson
Courses Plus Student 477 Points

whats wrong?

dont understand whats wrong with this code

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


while counter < numbers.count {
  sum += (numbers.count)
  counter++ }


while counter < numbers.count {
    sum = sum + numbers[counter]
    counter++
}
// Enter your code below

2 Answers

Keli'i Martin
Keli'i Martin
8,227 Points
Keli'i Martin
Keli'i Martin
8,227 Points

I'm not sure why you have two while loops but you don't need the first one at all. The second while loop has the exact code you need to pass the challenge.

Tobias Helmrich
Tobias Helmrich
31,603 Points
Tobias Helmrich
Tobias Helmrich
31,603 Points

Hey there,

the code of the second while loop is actually perfectly fine! The first one however is wrong because you're just adding the length of the numbers array to the sum variable all the time but you have to add the value at the current index to the sum variable which you're doing correctly in the second loop. The first while loop is also the reason why you're not passing the challenge, so if you remove it, it should work!

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

I hope that helps! :)