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

Posted by rico petrini
rico petrini
111 Points

I don't understand how to use sum.

I think I'm using sum correctly

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

// Enter your code below
while counter <= numbers.count {
print("hi")
counter += 1
}
while sum < numbers.count {
print(numbers[sum])
sum += 1
}
Harold Davis
Harold Davis
Courses Plus Student 14,604 Points

Its asking in the instructions only for one loop and you want to just use less than < not <= because the counter will go over. the instructions also say to use counter as the index not sum. and after you get the number from the index ad it to the sum. 

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

// Enter your code below
while counter < numbers.count {
sum = sum + numbers[counter]
counter += 1
}

1 Answer

Nico Schmidt
Nico Schmidt
12,781 Points
Nico Schmidt
Nico Schmidt
12,781 Points 
 let numbers = [2,8,1,16,4,3,9]
var sum = 0
var counter = 0

// Enter your code below

while counter < numbers.count {
  let newValue = numbers[counter]
  sum = sum + newValue
  counter += 1
}