[프로그래머스]다트 게임

import Foundation

func solution(_ dartResult:String) -> Int {

    let dartResult: [Character] = Array(dartResult)
    var scores: [Int] = []
    var temp: Character = " "
    var index: Int = -1

    for c in dartResult {

        switch c {
            case "0"..."9":
                if temp == "1" && c == "0" {
                    scores[index] = 10
                } else {
                    scores.append(Int(String(c))!)
                    index += 1
                }

            case "D":
            scores[index] = Int(pow(Double(scores[index]), Double(2)))
            case "T":
            scores[index] = Int(pow(Double(scores[index]), Double(3)))

            case "*":
                if index == 0 {
                    scores[index] = scores[index] * 2
                } else {
                    scores[index] = scores[index] * 2
                    scores[index - 1] = scores[index - 1] * 2
                }
            case "#":
                scores[index] = scores[index] * -1

            default:
                break
        }
        temp = c
    }

    return scores.reduce(0, +)
}

func solution(_ dartResult:String) -> Int {
        let numberList = dartResult.split(whereSeparator: {$0.isLetter || $0 == "#" || $0 == "*"})
        let letterList = dartResult.split(whereSeparator: {$0.isNumber})

        var totalScore = 0

        for (i, (number, letter)) in zip(numberList, letterList).enumerated() {
            var score = 0
            if let number = Int(number) {
                score = letter.contains("D") ? number * number : letter.contains("T") ? number * number * number : number

            }
            if letter.contains("*") {
                score *= 2
            } else if letter.contains("#") {
                score = -score
            }
            if i != 2 {
                if letterList[i + 1].contains("*") {
                    score *= 2
                }
            }
            totalScore += score
        }

        return totalScore
}

zip, split(whereSeparator: )