Swift:分组配对，算法

Question

我正在编写一种算法来将人们分组，目前，我可以为每组执行两个操作，前提是我想要分组的人数是偶数。

我需要帮助来优化算法以添加两个功能，

1)注意奇数，每个人都必须在一个组中

2)每组的人数应该是动态的，我可以决定配对 2、3、4 等

class Pair{

  var key: String?
  var value: String?

 init(key: String, value: String) {
     self.key = key
     self.value = value
   }
}



var pairList = [Pair]()

var names = ["Titi", "Bolu", "Tope", "Lola",  "bolaji", "Idowu", "Philips", "Franka", "Dolphin", "Dolapo"]

//names.shuffle()

var counter = 0
for f in stride(from: 1, through: names.count, by: 2) {

 var pair = Pair(key: names[counter], value: names[counter+1])
 pairList.append(pair)
  counter = counter + 2
}

names.removeAll()

for par in pairList{
   print("\(par.key)" + " and " + "\(par.value)")
 }

Answer 1

来自 @Alexander 分享的链接，这就是有效的方法 Mysterious "extra argument in call" error in Array extension method

extension Array {
    func chunked(by chunkSize: Int) -> [[Element]] {
        return stride(from: 0, to: self.count, by: chunkSize).map {
            Array(self[$0 ..< Swift.min($0 + chunkSize, self.count)]) // fixed
        }
    }
}