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

Adelita Gonzales
Adelita Gonzales
1,837 Points
Posted by Adelita Gonzales
Adelita Gonzales
1,837 Points

While loop... why have you forsaken me???

I can't seem to figure this one out... help?

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 (sum [counter]) counter+=1 }

1 Answer

Magnus Hållberg
Magnus Hållberg
17,232 Points
Magnus Hållberg
Magnus Hållberg
17,232 Points

The challenge doesnt tell you to print the result, it tells you to store the result in the "sum" variable. In the body of the while loop you need to do the calculation and that needs to happen before the count update. To keep track of witch values in the array to calculate you use the counter value, since that value will change for every iteration the loop goes through you can simply add sum to numbers[counter] and update sum to that result. 

          {
          sum = sum + numbers[counter]
          counter += 1
          }