Converting numbers into English
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How about to roman numerals ;)
Software Kinetics - Dependable Software news
Oh, yeah - that's fun - actually quite difficult!
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Oh oh, that's not how you do phone numbers.
I wanna be a eunuchs developer! Pass me a bread knife!
ROFL!
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You had to go no further than our very own CP[^] or I stole this from StuckOverflow...
public static string NumberToWords(int number)
{
if (number == 0)
return "zero";if (number < 0) return "minus " + NumberToWords(Math.Abs(number)); string words = ""; if ((number / 1000000) > 0) { words += NumberToWords(number / 1000000) + " million "; number %= 1000000; } if ((number / 1000) > 0) { words += NumberToWords(number / 1000) + " thousand "; number %= 1000; } if ((number / 100) > 0) { words += NumberToWords(number / 100) + " hundred "; number %= 100; } if (number > 0) { if (words != "") words += "and "; var unitsMap = new\[\] { "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen" }; var tensMap = new\[\] { "zero", "ten", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety" }; if (number < 20) words += unitsMap\[number\]; else { words += tensMap\[number / 10\]; if ((number % 10) > 0) words += "-" + unitsMap\[number % 10\]; } } return words;}
MVVM # - I did it My Way ___________________________________________ Man, you're a god. - walterhevedeich 26/05/2011 .\\axxx (That's an 'M')
Yeah - I thought about doing it that way but it wasn't fun to write! I'm sure I overcomplicated it, but - whatever - I had fun!
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1. Why not? 2. To learn the language. Beats the heck out of "Hello World". 3. For the same reason people draw doodles. 4. Why not? :)
That's it - it's a doodle!
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mark merrens wrote:
Curmudgeonprofessional
ftfy
MVVM # - I did it My Way ___________________________________________ Man, you're a god. - walterhevedeich 26/05/2011 .\\axxx (That's an 'M')
_Maxxx_ wrote:
Curmudgeonprofessional
Pompous ass. That should do it.
"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur." Red Adair. Those who seek perfection will only find imperfection nils illegitimus carborundum me, me, me me, in pictures
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Really? Convert's slow? Thanks!
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A parser isn't really applicable here: you can't exactly parse a string of digits into English...
Convert.ToInt32(N % p);Use a cast. There is only one useful method in Convert -- ChangeType. For all other uses for Convert, there are better alternatives. -
Convert.ToInt32(N % p);Use a cast. There is only one useful method in Convert -- ChangeType. For all other uses for Convert, there are better alternatives.Noted - very good.
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_Maxxx_ wrote:
Curmudgeonprofessional
Pompous ass. That should do it.
"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur." Red Adair. Those who seek perfection will only find imperfection nils illegitimus carborundum me, me, me me, in pictures
Concur!
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You had to go no further than our very own CP[^] or I stole this from StuckOverflow...
public static string NumberToWords(int number)
{
if (number == 0)
return "zero";if (number < 0) return "minus " + NumberToWords(Math.Abs(number)); string words = ""; if ((number / 1000000) > 0) { words += NumberToWords(number / 1000000) + " million "; number %= 1000000; } if ((number / 1000) > 0) { words += NumberToWords(number / 1000) + " thousand "; number %= 1000; } if ((number / 100) > 0) { words += NumberToWords(number / 100) + " hundred "; number %= 100; } if (number > 0) { if (words != "") words += "and "; var unitsMap = new\[\] { "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen" }; var tensMap = new\[\] { "zero", "ten", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety" }; if (number < 20) words += unitsMap\[number\]; else { words += tensMap\[number / 10\]; if ((number % 10) > 0) words += "-" + unitsMap\[number % 10\]; } } return words;}
MVVM # - I did it My Way ___________________________________________ Man, you're a god. - walterhevedeich 26/05/2011 .\\axxx (That's an 'M')
Not very flexible.
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How about to roman numerals ;)
Software Kinetics - Dependable Software news
I added that to my version last night. And today I wondered about adding support for doing thousands as hundreds, e.g. "twenty-five hundred".
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Oh oh, that's not how you do phone numbers.
I wanna be a eunuchs developer! Pass me a bread knife!
Phone numbers aren't numbers.
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Oh, yeah - that's fun - actually quite difficult!
Only as difficult as you like.
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Not very flexible.
True -0 but the likelihood of the number system changing any time soon is low ;)
MVVM # - I did it My Way ___________________________________________ Man, you're a god. - walterhevedeich 26/05/2011 .\\axxx (That's an 'M')
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_Maxxx_ wrote:
Curmudgeonprofessional
Pompous ass. That should do it.
"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur." Red Adair. Those who seek perfection will only find imperfection nils illegitimus carborundum me, me, me me, in pictures
Well fuck you
MVVM # - I did it My Way ___________________________________________ Man, you're a god. - walterhevedeich 26/05/2011 .\\axxx (That's an 'M')
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1. Why not? 2. To learn the language. Beats the heck out of "Hello World". 3. For the same reason people draw doodles. 4. Why not? :)
Marc A. Brown wrote:
1. Why not?
Well he said he did it at work, so I assumed it was something required for the business rather than being done as a leisure activity. So re-inventing the wheel is not generally a good thing for a business to do with so trivial a thing.
Marc A. Brown wrote:
To learn the language. Beats the heck out of "Hello World".
Again - he was doing it at work & I assumed that he wasn't doing it for fun but for a business requirement.
Marc A. Brown wrote:
4. Why not? :)
Because
MVVM # - I did it My Way ___________________________________________ Man, you're a god. - walterhevedeich 26/05/2011 .\\axxx (That's an 'M')
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True -0 but the likelihood of the number system changing any time soon is low ;)
MVVM # - I did it My Way ___________________________________________ Man, you're a god. - walterhevedeich 26/05/2011 .\\axxx (That's an 'M')
Think globally.
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Marc A. Brown wrote:
1. Why not?
Well he said he did it at work, so I assumed it was something required for the business rather than being done as a leisure activity. So re-inventing the wheel is not generally a good thing for a business to do with so trivial a thing.
Marc A. Brown wrote:
To learn the language. Beats the heck out of "Hello World".
Again - he was doing it at work & I assumed that he wasn't doing it for fun but for a business requirement.
Marc A. Brown wrote:
4. Why not? :)
Because
MVVM # - I did it My Way ___________________________________________ Man, you're a god. - walterhevedeich 26/05/2011 .\\axxx (That's an 'M')
_Maxxx_ wrote:
he said he did it at work, so I assumed it was something required for the business
I did most of my Turing Machine experiments at a previous job. :~
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Well fuck you
MVVM # - I did it My Way ___________________________________________ Man, you're a god. - walterhevedeich 26/05/2011 .\\axxx (That's an 'M')
No sir, fuck you. I would suggest purchasing a sense of humor: you plainly lack one and are so far up your own ass I can't believe you can see well enough to have written these posts. Have a nice day, twat.
"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur." Red Adair. Those who seek perfection will only find imperfection nils illegitimus carborundum me, me, me me, in pictures
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So I've been enjoying myself at work today: I wrote something to take a number and convert it into English, e.g. "12324.56" becomes "twelve thousand, three hundred and twenty-four point five six". I know this is an old problem: I remember having done this something like 30 years ago, as part of a computer science class, but I actually needed it for something today: in doing it, I was amazed at how many ways there are to achieve it in C# (the last time I wrote it, it was in Algol-60!), and how many little optimizations I was able to add as I sat there looking at each iteration of the code. I ended up trying to keep the code as terse as I could but also as fast as I could, without having too many IFs and things all over the place. I ended up using a bunch of enums and letting the runtime make words out of them, rather than having strings for it: I'm not sure it makes a huge difference, but it just seemed more elegant, somehow. Of course, in a problem like this, there's always the part about trying to stop it saying things like, "two thousand, zero hundred and onety-zero", so part of the fun was trying not to write anything too specific to avoid things like that: in my mind, if I got the algorithm right, that stuff would just sort of work... It's nice having a bit of time on one's hands at work, for a change. Anyway, I had a lot of fun, so I thought I'd share: if anyone else has a better method (and I'm sure they do) then why not join in...? Meanwhile, here's my version:
public static class Numeric
{
private enum Digit
{
zero = 0, one = 1, two = 2, three = 3, four = 4,
five = 5, six = 6, seven = 7, eight = 8, nine = 9
}private enum Teen
{
ten = 10, eleven = 11, twelve = 12, thirteen = 13, fourteen = 14,
fifteen = 15, sixteen = 16, seventeen = 17, eighteen = 18, nineteen = 19
}private enum Ten
{
twenty = 2, thirty = 3, forty = 4, fifty = 5,
sixty = 6, seventy = 7, eighty = 8, ninety = 9
}private enum PowerOfTen
{
hundred = 0, thousand = 1, million = 2, billion = 3,
trillion = 4, quadrillion = 5, quintillion = 6
}/// /// How many powers of ten there are; faster to work this out ahead of time,
/// and I didn't want to hard-code it into the algorithm...
///
private static int PowersOfTen = Enum.GetValues(typeof(PowerOfTen)).Length;/// /// Converts a number to English words
///
/// The numberThanks for a few days' exercise. I made one that can be used like:
2345L.ToString<ShortScale>()==>Two Thousand Three Hundred Forty-FiveWhere ShortScale is:public enum ShortScale : long
{
Zero = 0 , One = 1 , Two = 2 , Three = 3 , Four = 4 , Five = 5 , Six = 6 , Seven = 7 , Eight = 8
, Nine = 9 , Ten = 10 , Eleven = 11 , Twelve = 12 , Thirteen = 13 , Fourteen = 14 , Fifteen = 15
, Sixteen = 16 , Seventeen = 17 , Eighteen = 18 , Nineteen = 19, \[PIEBALD.Types.NumNuts.HyphenatedAttribute\] Twenty = 20...
, [PIEBALD.Types.NumNuts.CountedAttribute] Hundred = 100
...
}I also have an enum that will yield
Twenty-Three Hundred Forty-Five, but it needs work. Here's another:2345L.ToString<Roman>()==>MMCCCXLVpublic enum Roman
{
Nulla = 0
, [PIEBALD.Types.NumNuts.RepeatedAttribute] I = 1
, [PIEBALD.Types.NumNuts.RepeatedAttribute] IV = 4
, [PIEBALD.Types.NumNuts.RepeatedAttribute] V = 5
, [PIEBALD.Types.NumNuts.RepeatedAttribute] IX = 9
, [PIEBALD.Types.NumNuts.RepeatedAttribute] X = 10
...
}But this technique tops out at Quintillion (short scale) or Trillion (long scale), so another technique would be necessary to work with greater numbers. It should be possible to define a class of BigInteger constants and use that instead. Added:
public sealed class TestClass
{
public static readonly System.Numerics.BigInteger Zero = 0 ;
public static readonly System.Numerics.BigInteger One = 1 ;
...
[PIEBALD.Types.NumNuts.HyphenatedAttribute]
public static readonly System.Numerics.BigInteger Twenty = 20 ;
...
[PIEBALD.Types.NumNuts.CountedAttribute]
public static readonly System.Numerics.BigInteger Hundred = 100 ;
...
[PIEBALD.Types.NumNuts.CountedAttribute]
public static readonly System.Numerics.BigInteger Decillion = Thousand * Nonillion ;
...
}