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

Posted by Victor O'Rourke
Victor O'Rourke
2,387 Points

What am i missing here guys/gals?

Double checked my work and still getting message its not right... just trying to add sum of array numbers, and use counter as index.. thanks in advance for any help!

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

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

2 Answers

Matthew Long
Matthew Long
28,407 Points
Matthew Long
Matthew Long
28,407 Points

It's a common issue. You are incrementing the counter before you are adding the first index of numbers to sum. This means you're skipping over the first value.

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

while counter < numbers.count {
  sum += numbers[counter]
  counter += 1
}
Victor O'Rourke
Victor O'Rourke
2,387 Points
Victor O'Rourke
Victor O'Rourke
2,387 Points

I didn't even realize i was putting it ahead of that!!! Thank you for the quick help.