Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trial
Charles Loo
Courses Plus Student 420 Pointscan't figure out the answer
I need help with the second part of the challenge
let numbers = [2,8,1,16,4,3,9]
var sum = 0
var counter = 0
// Enter your code below
1 Answer
nicholasdevereaux
16,353 PointsSo the question wants you to sum up the numbers in the numbers array by iterating over it and adding each number to the sum variable. The counter variable is going to be used as your iterator value to access each item in the numbers array as you are looping over it. The condition of the while loop is that the loop should continue as long as counter is less than the amount of items in the numbers array.
while counter < numbers.count {
// Counter and Sum start out as zero, so the first time through the loop you will add the first item in the array (2) to sum.
sum += numbers[counter]
// Each time through the loop, you add one to counter so it will access the next item in the array and add it to the variable sum.
counter += 1
}