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

Posted by Lester Paredes
Lester Paredes
4,543 Points

Why won't the code work on the second challenge question?

I can't figure out why this doesnt work.

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

1 Answer

Steven Parker
Steven Parker
229,644 Points
Steven Parker
Steven Parker
229,644 Points

Using "<=" for the loop test will cause the loop to run one time too many.
Use a "<" test instead to stop the loop before it tries to use an index too large.