func example(str: String, isAction: Bool = true, action: () -> Void) {
    print("---------\(str), isAction: \(isAction)---------")
    
    if isAction {
        action()
    }
}

func createRandomArray(numberOfElements: Int = 10) -> [Int] {
    var randomIntInArray: [Int] = [Int]()
    while randomIntInArray.count != numberOfElements {
        let popRandomValue = Int(arc4random_uniform(11))
        randomIntInArray.append(popRandomValue)
    }
    return randomIntInArray
}

example(str: "Selection Sort", isAction: true) {
    func selectionSort<T: Comparable>(data: [T]) -> [T] {
        guard data.count > 1 else { return data }
        var targetData = data
        var counter: Int = 0
        for index in 0..<(targetData.count-1) {
            var lowestIndex = index
            for innerIndex in index+1..<targetData.count {
                counter += 1
                print("index:\(index), innerIndex:\(innerIndex), 비교: \(targetData[lowestIndex]), \(targetData[innerIndex]), \(targetData)")
                if targetData[lowestIndex] > targetData[innerIndex] {
                    // index를 바꾸내?
                    lowestIndex = innerIndex
                }
            }
            index != lowestIndex ? targetData.swapAt(index, lowestIndex) : print("현재 값이 가장 작거나 같음\(targetData[index]), \(targetData[lowestIndex])")
        }
        print("counter is \(counter)")
        return targetData
    }

    let x = createRandomArray(numberOfElements: 16)
    print(selectionSort(data: x))
}