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iOS Swift 2.0 Collections and Control Flow Control Flow With Loops Working with Loops

Posted by Lucas Peters
Lucas Peters
Courses Plus Student 1,003 Points

Sorry i don't get this one..

Sorry i don't get this one.. The loops are very difficult i think.

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

// Enter your code below

2 Answers

Andres Aguero
Andres Aguero
30,545 Points
Andres Aguero
Andres Aguero
30,545 Points

Hey Lucas,

Don't worry loops were very difficult for me when I started, but with a little practice they become a force of nature.

Step 1: You need to define how many numbers are in the array and you do this with the count property.

while counter < numbers.count
{
    counter++
}
Lucas Peters
PLUS
Lucas Peters
Courses Plus Student 1,003 Points
Lucas Peters
Lucas Peters
Courses Plus Student 1,003 Points

Thank you Andres!

and can you also help with step 2?

Lucas.

Andres Aguero
Andres Aguero
30,545 Points
Andres Aguero
Andres Aguero
30,545 Points

Hey Lucas,

The step 2 is simple. All you have to do is add the values together to get the sum of all of them. You can do it by extracting each value from the array*(the counter variable)* and adding it to the sum variable. 

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