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 trialKyle Deckert
875 PointsStuck on While Counter
Stuck on Challenge for while and sum of the while loop. Not too sure of how to terminate without crashing as it keeps calculating. Not too sure of what I am doing wrong. Was wondering if anyone had any insight.
In this task, we have an array of numbers and we want to compute the sum of its values.
We have a variable ,sum, that will store the value of the sum of numbers from the array.
We also have a variable ,counter, which we will use to track the number of iterations of the while loop.
Step 1: Create a while loop. The while loop should continue as long as the value of counter is less than the number of items in the array. (Hint: You can get that number by using the count property)
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.
Thanks!
let numbers = [2,8,1,16,4,3,9]
var sum = 0
var counter = 0
// Enter your code below
while counter < numbers.count {
numbers[counter]
sum += 0
}
2 Answers
kjvswift93
13,515 Pointslet numbers = [2,8,1,16,4,3,9]
var sum = 0
var counter = 0
// Enter your code below
while counter < numbers.count {
sum += numbers[counter]
counter += 1
}
KRIS NIKOLAISEN
54,971 PointsSome hints
- So you don't create an infinite loop you will want to increase
counter
inside the loop -
numbers[counter]
gives you the values that you want to sum. Use this withsum +=
Kyle Deckert
875 PointsThanks!
Kyle Deckert
875 PointsKyle Deckert
875 PointsThanks!
malcolm henry
1,089 Pointsmalcolm henry
1,089 PointsWhy is this the answer? i didnt even think about adding a .count to it.