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April 4, 2019 02:50
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STEP2-5
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import Foundation | |
func recognize( input : String ) ->(Double,String,String){ | |
let pattern = "[^0-9.]+" | |
let regex = try! NSRegularExpression.init(pattern: pattern, options: []) | |
let matchRange = regex.firstMatch(in: input, options: [], range: NSRange.init(location: 0, length: input.count)) | |
let units = NSString.init(string: input).substring(with: matchRange!.range) | |
let beforeUnit = units.split(separator: " ")[0] | |
let afterUnit = units.split(separator: " ").count == 2 ? String(units.split(separator: " ")[1]):"m" | |
let value = input.filter{ | |
c in | |
if(units.contains(c)){ | |
return false | |
} | |
return true | |
} | |
return (Double.init(value)! ,String(beforeUnit),String(afterUnit)) | |
} | |
func convert(input:String) -> String { | |
let (value ,beforeUnit, afterUnit) = recognize(input: input) | |
var magnification :Double | |
switch ((beforeUnit,afterUnit) ) { | |
case ("cm","m"): | |
magnification = 0.01 | |
case ("cm","inch"): | |
magnification = 0.393701 | |
case ("cm","yard"): | |
magnification = 0.0109361 | |
case ("m","cm"): | |
magnification = 100 | |
case ("m","inch"): | |
magnification = 39.3701 | |
case ("m","yard"): | |
magnification = 1.09361 | |
case ("inch","cm"): | |
magnification = 2.54 | |
case ("inch","m"): | |
magnification = 0.0254 | |
case ("inch","yard"): | |
magnification = 0.0277778 | |
case ("yard","cm"): | |
magnification = 91.44 | |
case ("yard","m"): | |
magnification = 0.9144 | |
case ("yard","inch"): | |
magnification = 36 | |
default: | |
return "지원하지않는 단위입니다" | |
} | |
let result = "\(convertValueType(value: value * magnification))\(afterUnit)" | |
return result | |
} | |
func convertValueType( value : Double)->String{ | |
if(value.remainder(dividingBy: 1) == 0){ | |
return "\(Int.init(value))" | |
}else{ | |
return "\(value)" | |
} | |
} | |
func start(){ | |
while(true) | |
{ | |
print("변환할 값과 단위를 입력해주세요") | |
let inputValue = readLine() | |
let quit = ["q","quit"] | |
if(quit.contains(inputValue!)){ | |
break | |
} | |
print(convert(input: inputValue!)) | |
} | |
} | |
start() |
다음 단계를 하면서 recognize() 내부에 있는 작업들을 함수가 하나의 작업만 하도록 분리하고, recognize() 내부에서는 조합해서 사용하도록 개선해보세요.
감사합니다 JK 개선해서 진행해보겠습니다.
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convert(input:String)
함수에 있는 switch 비교문은 숫자만 리턴하는군요!이런 경우는 메모리에 숫자값을 저장하는 방식을 고려해보세요. 데이터 구조를 사용하면 코드량을 줄일 수 있습니다.