2018 KAKAO BLIND RECRUITMENT_캐시

func solution(_ cacheSize:Int, _ cities:[String]) -> Int {
    var baguni = Array<String>()
    var result = 0
    var cities1 = cities.map{$0.lowercased()}
    for city in cities1 {
        if cacheSize == 0 {return 5 * cities.count}
        if !baguni.contains(city){
            result += 5
            if baguni.count != cacheSize {
                
                baguni.append(city)
            }
            else if baguni.count == cacheSize {
                baguni.removeFirst()
                baguni.append(city)
            } 
        } 
        else{
            let inWord = city
            baguni.removeAll{$0 == inWord}
            baguni.append(city)
            result += 1          
        }
    }
    return result
}

• 대소문자 구분안한다 = 소문자 또는 대문자로 통일
• 캐시 사이즈가 0 일 거라는 생각 못함.