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

Mayank Munjal
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Mayank Munjal
Front End Web Development Techdegree Graduate 18,120 Points
Posted by Mayank Munjal
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Mayank Munjal
Front End Web Development Techdegree Graduate 18,120 Points

Need help with this code challenge. Please help guys!

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.

For example: sum = sum + newValue. Or you could use the compound addition operator sum += newValue where newValue is the value retrieved from the array.

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(numbers[counter])
counter += 1
}

1 Answer

Alexander Davison
Alexander Davison
65,469 Points
Alexander Davison
Alexander Davison
65,469 Points

Why are you printing stuff?

  1. Why are you printing anything? The challenge didn't ask you to.
  2. You can't/shouldn't use the fixed number 7 as the maximum value, you should get the length of the array!
let numbers = [2,8,1,16,4,3,9]
var sum = 0
var counter = 0

// Enter your code below

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

I hope this helps you. :smile:

If you have any questions, please ask below.

~Alex