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

Posted by Marley Barrett
Marley Barrett
1,818 Points

I do not understand step 2 help me

I have step one down but I cannot get step 2

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])
    counter += 1
}

while counter < numbers.count { 
(numbers[counter]) counter == 1
}

1 Answer

Sean Wilson
Sean Wilson
2,572 Points
Sean Wilson
Sean Wilson
2,572 Points

Hi Marley,

Step 2 of the challenge is about adding up all the values inside of 'numbers'. You have to store the added up values inside of 'sum'.

Your answer needs to assign a new value into 'sum' on every iteration.

There's another gotcha type issue in your code. You have two while loops and they both check the 'counter' value as the condition for continuing to loop. However, after the first loop finishes, 'counter' will equal 'numbers.count' - since that's when the first loop will terminate. The second loop will never execute because the condition is false from the start. Do your solution, you will only need 1 while loop.

I hope that helps.