Created
January 15, 2014 10:19
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Number to text (not quite perfect)
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object numbertext { | |
val singleDigits = Array("zero", "one","two","three","four","five","six","seven","eight","nine") | |
//> singleDigits : Array[String] = Array(zero, one, two, three, four, five, six | |
//| , seven, eight, nine) | |
val teens = Array("ten","eleven","twelve","thirteen","fourteen","fifteen","sixteen","seventeen","eighteen","nineteen") | |
//> teens : Array[String] = Array(ten, eleven, twelve, thirteen, fourteen, fift | |
//| een, sixteen, seventeen, eighteen, nineteen) | |
val tens = Array ("","","twenty","thirty","fourty","fifty","sixty","seventy","eighty","ninety") | |
//> tens : Array[String] = Array("", "", twenty, thirty, fourty, fifty, sixty, | |
//| seventy, eighty, ninety) | |
def numberText(number: Int): String = { | |
def toDigit (c: Char, a: Array[String]): String = a(c - '0') | |
def helper (ns: String): String = ns.length match { | |
case l if l > 3 => | |
val (high, low) = ns.splitAt (l - 3) | |
helper(high) + " thousand " + helper(low) | |
case l if l == 3 => | |
val (high, low) = ns.splitAt(l - 2) | |
helper(high) + " hundred " + helper(low) | |
case l if l == 2 => if (ns(0) == '1') { | |
toDigit(ns(1), teens) | |
} else { | |
toDigit(ns(0), tens) + " " + toDigit(ns(1), singleDigits) | |
} | |
case l if l == 1 => toDigit(ns(0), singleDigits) | |
case l if l == 0 => "" | |
} | |
helper(number.toString) | |
} //> numberText: (number: Int)String | |
numberText(1462) //> res0: String = one thousand four hundred sixty two | |
} |
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To be perfect I'd like one thousand four hundred AND sixty two