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Ary de Oliveira
28,298 PointsSwift 2.0
Challenge Task 1 of 2
This one might be a bit tricky so let's take it in steps. We have an array of numbers, nothing tricky, you've seen this before. What we want is to compute the sum of the numbers in the array. To do this we're going to use a while loop.
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)
I need help please,
let numbers = [2,8,1,16,4,3,9]
var sum = 0
var counter = 0
// Enter your code below
let numbers = [2,8,1,16,4,3,9]
var sum = 0
var counter = 0
while counter < numbers.count {
print(numbers[counter])
counter++
}
sum =
5 Answers
Caleb Kleveter
Treehouse Moderator 37,862 PointsFirst, don't rewrite the variables and constants, they are there so you don't have to do that. Second, all you need to do on task 1 is create the while loop and increment counter so the loops doesn't go forever.
while counter < numbers.count {
counter++
}
All the other code gets written later.
Ary de Oliveira
28,298 Pointsahh ok cool... try
Ary de Oliveira
28,298 PointsChallenge Task 2 of 2 is not working. Can you help please? Caleb ...
let numbers = [2,8,1,16,4,3,9]
var sum = 0
var counter = 0
// Enter your code below
while counter < numbers.count { counter++}
while counter < numbers.count {
print(numbers[counter])
counter++
}
sum =
Caleb Kleveter
Treehouse Moderator 37,862 PointsOnly one while loop, not two. What you need to do is add to the sum:
sum +=
The numbers you are accessing from the array:
numbers[counter]
while counter < numbers.count {
sum += numbers[counter]
counter++
}
It is important to increment counter after computing the sum, that way you start and end at the right index.
Ary de Oliveira
28,298 Pointsno work i am lost 2 of 2
Caleb Kleveter
Treehouse Moderator 37,862 PointsRestart the challenge. Copy and paste the code from my first answer. Then on the second task delete that code and copy and paste the code from the second answer.