Adding values of an array with each other inside a while loop

Question

Hey! Not sure how i should proceed with Challenge Task 2 of 2 in Swift Collections n Control Flow (While Loop challenge).

These are the logical steps I have considered:

The counter stores the number of values contained within the array called numbers
The sum should contain the sum of all the values from the array
The first step that i completed, setup the counter variable in place (which works fine):

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

}

Now my challenge is to figure out how i can add together each value with the index 0 up to index 6 from the numbers array, by using the counter to define the index value? Basically: sum = numbers[0] + numbers[1] + numbers[2] + ...numbers[6]

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
    var newValue = counter
    sum = sum + newValue
}

Answer 1 · 2018-01-03T10:29:51Z

January 3, 2018 10:29am

I figured it out! Noticed that my xcode was bugging for some reason when i tried to insert counter as an index value for numbers. but i sorted it out and now it works! added this within the while loop

var newValue = numbers[counter] //uses counter as an index value for the array
sum += newValue //adds the first value in sum, and keeps adding new values in the loop until number of iterations are done
counter += 1

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Anik Devaughn

Anik Devaughn

Adding values of an array with each other inside a while loop

1 Answer

Anik Devaughn

Anik Devaughn