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

kamal bakhouche
kamal bakhouche
989 Points
Posted by kamal bakhouche
kamal bakhouche
989 Points

I can't figure out what they want me to do in this code challenge, how should I approach this? Challenge Task 2 of 2

Working with Loops, Challenge Task 2 of 2

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

// Enter your code below
while counter < numbers.count {

                             counter += 1 
                             }


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

2 Answers

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

You're really close. But it wants you to do everything inside of one while loop. Also, unfortunately the ++ operator is depreciated :( 

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 += 1
}
kamal bakhouche
kamal bakhouche
989 Points
kamal bakhouche
kamal bakhouche
989 Points

but is not Working also ?

Everton Carneiro
Everton Carneiro
15,994 Points
Everton Carneiro
Everton Carneiro
15,994 Points

Hello mate. First of all, remember this important note: " Important: In each task of this code challenge, the code you write should be added to the code from the previous task.". Which means that you need to add the new code to the previous task. Secondly, this a syntax error:

counter++

This is no longer available since swift 3. You should do like this:

counter += 1

Also in this line:

 sum = sum + numbers[counter]

You could do like this:

sum += numbers[counter]

I hope that helps.