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

Patrik Franzén Dennis
Patrik Franzén Dennis
2,636 Points
Posted by Patrik Franzén Dennis
Patrik Franzén Dennis
2,636 Points

I don't understand what I need to write/code.

The question is the following: Now that we have the while loop set up, it's time to compute the sum! Using the value of counter as an index value, retrieve each value from the array and add it to the value of sum. PLEASE HELP

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

// Enter your code below

while counter < 6 {
  counter += 1
}

2 Answers

Kyle Johnson
Kyle Johnson
33,528 Points
Kyle Johnson
Kyle Johnson
33,528 Points

Hi Patrick!

This is answered explained and answered here.

Thomas Dobson
Thomas Dobson
7,511 Points
Thomas Dobson
Thomas Dobson
7,511 Points

Hi Patrik,

Lets break this down a bit:

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

// Enter your code below
while counter < numbers.count { // says while counter is less than the number of items in array "numbers" or a total of 7.
      let newValue = numbers[counter] // let newValue equal to the current counter value
      sum += newValue // add newValue to the sum
      counter += 1 // increment counter by 1
}

I hope this helps!