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

Mika Kiela
Mika Kiela
2,178 Points
Posted by Mika Kiela
Mika Kiela
2,178 Points

Some help needed with task 2 of loops..

I have no idea what I should do in this task. Any help?

The task: "Using the value of counter as an index value, retrieve each value from the array and add it to the value of sum. For example: sum = sum + newValue. Or you could use the compound addition operator sum += newValue where newValue is the value retrieved from the array."

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

// Enter your code below
while counter <= 7 {
      counter += 1
}
Jonathan Ruiz
Jonathan Ruiz
2,998 Points
Jonathan Ruiz
Jonathan Ruiz
2,998 Points

In the while loop your checking if the counter is less than 7 which is the number of integers but Arrays start at 0 so there is really 6 index values. You need to use dot notation and count. 

while counter < numbers.count {

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

print(sum)

1 Answer

Mika Kiela
Mika Kiela
2,178 Points
Mika Kiela
Mika Kiela
2,178 Points

Okay I got it work! Thanks Jonathan!