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iOS Swift 2.0 Collections and Control Flow Control Flow With Loops Working with Loops

abdirahman liban
PLUS
abdirahman liban
Courses Plus Student 2,163 Points

i need help

i couldn't solve it

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

// Enter your code below

while sum < 2 {

print( sum + newValue)
sum++
}

1 Answer

Michael Reining
Michael Reining
10,101 Points

Hi,

The conditions for the while loop in your code are wrong.

The while loop should run until you have looped through all of the numbers in the array. To do that it should look like this.

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

// Enter your code below

while counter < numbers.count { // while the counter is less than the number of items in the array run the loop
    counter++ // increment the counter
}

In part 2, they are asking you to compute the sum. For that, just keep adding the numbers from the array like this.

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

// Enter your code below

while counter < numbers.count {
    sum = sum + numbers[counter] // access number in array by using the counter
    counter++
}

I hope that helps,

Mike

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