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

Kehinde Fatoki
Kehinde Fatoki
822 Points
Posted by Kehinde Fatoki
Kehinde Fatoki
822 Points

how do you retrieve the value from an array

I still can't find how to solve this problem despite getting help

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 = sum + numbers.count
      counter++
}

sum = sum + 7

1 Answer

Rodrigo Chousal
Rodrigo Chousal
16,009 Points
Rodrigo Chousal
Rodrigo Chousal
16,009 Points

Hey Kehinde,

In your while loop, you are constantly adding the same, constant number numbers.count, which is 7. The challenge is asking you to add the numbers in the numbers array using the loop. To do this, you must access the numbers in the numbers array by using numbers[counter] since you have a variable counter to keep track of where you are in the array. The last line in your code is not needed, and everything should look something like this:

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++
}

Hope this helps, Rodrigo