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MATTHEW WILLIAMS
iOS Development Techdegree Student 776 PointsSwift Collections and Control Flow Challenge 1
Hi all, I'm having difficulty understanding this question. Just wondering if someone can point me in the right direction?
Many thanks Matt
let numbers = [2,8,1,16,4,3,9]
var sum = 0
var counter = 0
// Enter your code below
while counter.count < numbers.count {
sum += 1
}
1 Answer
Mitch Little
11,870 PointsHi Matthew,
You have the syntax correct for the loop however you have not executed what the challenge wants you to do.
Ultimately the solution looks like this:
while counter < numbers.count {
sum += numbers[counter]
counter += 1
}
Which translates to: While counter is less than the number of values inside the constant 'numbers' continue executed the loop function. Inside the loop function, counter which starts of as 0 and finishes with a value of 6 (number of values inside 'numbers'), acts as the index number to read the array 'numbers'. Each time the loop reiterates, the subsequent number in 'numbers' is added to sum.
I hope this helps somewhat.
All the best and happy coding,
Mitch
Jenny Dogan
4,595 PointsJenny Dogan
4,595 PointsHi Mitch, does it matter if you put the counter statement before the sum statement? Thanks!
Mitch Little
11,870 PointsMitch Little
11,870 PointsHi Jenny,
Yes, because the counter should increase by one each time the while loop reiterates, after the new value is assigned to sum.
It also makes the code more readable.
I hope this helps!
Mitch
MATTHEW WILLIAMS
iOS Development Techdegree Student 776 PointsMATTHEW WILLIAMS
iOS Development Techdegree Student 776 PointsThanks Mitch