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

Posted by Emilia Diaz
Emilia Diaz
463 Points

Swift collections and control flow: challenge task 2.

I’m not sure what they are asking for with computing the sum. I tried a few of the loops from the challenge but nothing is working and I’m not getting a preview to see what I did wrong

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

// Enter your code below
while counter <= 7 {
print(counter)
counter += 1
}

1 Answer

Rogier Nitschelm
seal-mask
.a{fill-rule:evenodd;}techdegree
Rogier Nitschelm
iOS Development Techdegree Student 5,461 Points
Rogier Nitschelm
.a{fill-rule:evenodd;}techdegree
Rogier Nitschelm
iOS Development Techdegree Student 5,461 Points

I think you might have forgotten to update the sum. When you update the sum in each iteration (every time the code inside while is ran), you should eventually get a total sum of the numbers in the array.

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