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iOS Swift Basics (retired) Control Flow While and Do-While Loop

Posted by alex3
alex3
5,387 Points

CODE CHALLENGE PROBLEM

I do not understand where the problem is.

while_loops.swift 
let numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

var sad = 0
// the line below is the condition
while numbers[sad] < 11 {

    // these lines inside the { } are the loop body
    println(numbers[sad])

    sad++
}

2 Answers

AR Ehsan
AR Ehsan
7,912 Points
AR Ehsan
AR Ehsan
7,912 Points

Try this!

let numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

var index = 0

while index < numbers.count { println(numbers[index]) index++ }

jack daniels
PLUS
jack daniels
Courses Plus Student 8,079 Points
jack daniels
jack daniels
Courses Plus Student 8,079 Points

every time in while loop it increments your sad variable. last time it makes sad to 10 and when you want to print println(numbers[10]) it gives an error because there is nothing in numbers[10] . So when sad equals to 10 while loop must be stop. I add an if statement and error is gone :)

let numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

var sad = 0
// the line below is the condition
while numbers[sad] < 11 {

    // these lines inside the { } are the loop body
    println(numbers[sad])

    sad++

    if sad == 10{
        break
    }
}