The task was to take an array of numbers and parse it

• remove even numbers
• sort asc
• output: {num} is a lucky number for each number
• NO temp variables

Here’s my attempt, it works but I’m not sure its 100% correct

var ln = [7, 4, 38, 21, 16, 15, 12, 33, 31, 49]

func oddNumbers(data: [Int]) -> [Int] {
    data.filter { !$0.isMultiple(of: 2) }
}

func sortedData(data: [Int]) -> [Int] {
    data.sorted { $0 < $1 }
}

func printNumbers(data: [Int]) -> Void {
    for i in data {
        print("\(i) is a lucky number")
    }
}

func doNumberStuff(data: [Int], using getOddNums: ([Int]) -> [Int]) -> Void {
    printNumbers(data: sortedData(data: getOddNums(data)))
}

doNumberStuff(data: ln, using: oddNumbers)

I had a thought about passing in an array of function references to using then iterating over that array within doNumberStuff.

Maybe I’ll try that at a later date.

It was mentioned to chain the functions as a hint but I’m not familiar with this syntax. Maybe it was missed.

To chain these functions, use luckyNumbers.first { }.second { }, obviously putting the real function calls in there.

Leaving this note so I remember to update this at a later date.