scala模式匹配习题

def getZodiac(month:Int,day:Int):String={
  month match{
    case 1 if day >=20 =>"水瓶座"
    case 2 if day<= 18=>"水瓶座"
    case 2 if day >=19 =>"双鱼座"
    case 3 if day<= 20=>"双鱼座"
    case 3 if day >=21 =>"白羊座"
    case 4 if day<= 19=>"白羊座"
    case 4 if day >=20 =>"金牛座"
    case 5 if day<= 20=>"金牛座"
    case 5 if day >=21 =>"双子座"
    case 6 if day<= 21=>"双子座"
    case 6 if day >=22 =>"巨蟹座"
    case 7 if day<= 22=>"巨蟹座"
    case 7 if day >=23 =>"狮子座"
    case 8 if day<= 22=>"狮子座"
    case 8 if day >=23 =>"处女座"
    case 9 if day<= 22=>"处女座"
    case 9 if day >=23 =>"天秤座"
    case 10 if day<= 23=>"天秤座"
    case 10 if day >=24 =>"天蝎座"
    case 11 if day<= 22=>"天蝎座"
    case 11 if day >=23 =>"射手座"
    case 12 if day<= 21=>"射手座"
    case 12 if day >=22 =>"摩羯座"
    case 1 if day<= 19=>"摩羯座"
    case _ =>"未知"
  }
}

def main(args: Array[String]): Unit = {
  println(getZodiac(1,20))
  println(getZodiac(3,18))

}