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

Ryan Forte
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Ryan Forte
iOS Development Techdegree Student 2,955 Points
Posted by Ryan Forte
.a{fill-rule:evenodd;}techdegree
Ryan Forte
iOS Development Techdegree Student 2,955 Points

while loop

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 < numbers.count{

    for i in numbers{
    sum = sum + i
   counter += 1}
}

1 Answer

Jeff McDivitt
Jeff McDivitt
23,970 Points
Jeff McDivitt
Jeff McDivitt
23,970 Points

Hello - There is not for loop needed in this, you are just taking the numbers counter and adding it to the sum

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

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

}