Created
June 3, 2012 06:27
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みなとRuby会議01 ソーシャルコーディング[English Numerals] Scala版回答
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import scala.collection.immutable.Map | |
/** | |
* Created with IntelliJ IDEA. | |
* User: modal_soul | |
* Date: 12/06/02 | |
* Time: 23:06 | |
*/ | |
// 1桁のイミュータブルマップの作成 | |
val oneDigit = Map( | |
0 -> "zero", 1 -> "one", 2 -> "two", 3 -> "three", 4 -> "four", 5 -> "five", 6 -> "six", 7 -> "seven", 8 -> "eight", 9 -> "nine" | |
) | |
// 2桁で19以下のイミュータブルマップの作成 | |
val twoDigitOf19AndUnder = Map( | |
10 -> "ten", 11 -> "eleven", 12 -> "tweleve", 13 -> "thirteen", 14 -> "fourteen", 15 -> "fifteen", 16 -> "sixteen", 17 -> "seventeen", 18 -> "eighteen", 19 -> "nineteen" | |
) | |
// 2桁で20以上のイミュータブルマップの作成 | |
val twoDigitOf20AndOver = Map( | |
2 -> "twenty", 3 -> "thirty", 4 -> "fourty", 5 -> "fifty", 6 -> "sixty", 7 -> "seventy", 8 -> "eighty", 9 -> "ninety" | |
) | |
// 下2桁を判定 | |
def twoDigitTranslate(input:Int):String = { | |
(input/10) match { | |
// 10未満の場合 | |
case (0) => oneDigit(input) | |
// 10以上の場合 | |
case (1) => twoDigitOf19AndUnder(input) | |
// 20以上の場合 | |
case (_) => | |
(input%10) match{ | |
case (0) => twoDigitOf20AndOver(input/10) | |
case (_) => { | |
twoDigitOf20AndOver(input/10) + "-" + oneDigit(input % 10) | |
} | |
} | |
} | |
} | |
// 上2桁を判定 | |
def fourDigitTranslate(input:Int):String = { | |
(input/10) match { | |
// 1000未満の場合 | |
case (0) => { | |
oneDigit(input).union(" hundred") | |
} | |
// 2000未満の場合 | |
case (1) => { | |
// 1100未満の場合 | |
if(input%10==0){ | |
oneDigit(input/10).union(" thousand") | |
} | |
// 1100以上の場合 | |
else{ | |
twoDigitOf19AndUnder(input).union(" hundred") | |
} | |
} | |
// 2000以上の場合 | |
case (_) => { | |
oneDigit(input/10).union(" thousand")// + "and" +oneDigit(input%10).union(" hundred ") | |
} | |
} | |
} | |
// コマンドライン引数の取得 | |
val num:Int = args(0).toInt | |
// 100以上の場合 | |
if(num > 99){ | |
// 下2桁が0の場合 | |
if(num%10 == 0){ | |
println(fourDigitTranslate(num/100).capitalize) | |
} | |
// 下2桁が0以外の場合 | |
else { | |
println(fourDigitTranslate(num/100).capitalize + " and " + twoDigitTranslate(num%100)) | |
} | |
} | |
// 99以下の場合 | |
else { | |
println(twoDigitTranslate(num).capitalize) | |
} |
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