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

armando Rodriguez
armando Rodriguez
666 Points
Posted by armando Rodriguez
armando Rodriguez
666 Points

Im confused as to how to retrieve the data from the array and add it to counter index. Any help would be appreciated.

I completely forgot how to retrieve data from an array and add it to another variable. Any help would be appreciated.

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 {
  print(numbers)
  counter += 1

}

1 Answer

Jhoan Arango
MOD
Jhoan Arango
Treehouse Moderator 12,825 Points
Jhoan Arango
Jhoan Arango
Treehouse Moderator 12,825 Points

Hello Armando,

What you want to do is use the "counter" as the source for the index to retrieve an object or "value" from the array, and then use that to add.

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

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

Hope this helps you with your question