문제

내 풀이

import Foundation

func solution(_ angle:Int) -> Int {
    var answer: Int
    
    switch angle {
    case 0..<90:
        answer = 1
    case 90:
        answer = 2
    case 90..<180:
        answer = 3
    case 180:
        answer = 4
    default:
        answer = -1
    }
    return answer
}