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

Ricky Burton
Ricky Burton
1,094 Points
Posted by Ricky Burton
Ricky Burton
1,094 Points

While loop coding challenge

Hi all,

I can't figure out the sum code to complete this challenge.

while numbers.count < counters {

counters += 1 }

can someone please give me a hint.

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

// Enter your code below
while numbers.count < counter {
sum = numbers[0...6] + counter
counter += 1
}

1 Answer

Matthew Long
Matthew Long
28,407 Points
Matthew Long
Matthew Long
28,407 Points

Looks like you're trying to do too much. All the challenge is asking you to do is take the current loop value, which is counter and use that as the index in the numbers array. You are to then add that value to the sum. Also, don't forget the += operator because without it the sum will simply be 9 after your loop finishes.

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

while counter < numbers.count {
  sum += numbers[counter]
  counter += 1
}