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using System.Collections.Generic;
using System.Linq;
namespace NumberToWordsLib
{
/// <summary>
/// Number to word languages
/// </summary>
public enum Language
{
/// <summary>
/// English Language
/// </summary>
English,
/// <summary>
/// Persian Language
/// </summary>
Persian
}
/// <summary>
/// Digit's groups
/// </summary>
public enum DigitGroup
{
/// <summary>
/// Ones group
/// </summary>
Ones,
/// <summary>
/// Teens group
/// </summary>
Teens,
/// <summary>
/// Tens group
/// </summary>
Tens,
/// <summary>
/// Hundreds group
/// </summary>
Hundreds,
/// <summary>
/// Thousands group
/// </summary>
Thousands
}
/// <summary>
/// Equivalent names of a group
/// </summary>
public class NumberWord
{
/// <summary>
/// Digit's group
/// </summary>
public DigitGroup Group { set; get; }
/// <summary>
/// Number to word language
/// </summary>
public Language Language { set; get; }
/// <summary>
/// Equivalent names
/// </summary>
public IList<string> Names { set; get; }
}
/// <summary>
/// Convert a number into words
/// </summary>
public static class HumanReadableInteger
{
#region Fields (4)
private static readonly IDictionary<Language, string> And = new Dictionary<Language, string>
{
{ Language.English, " " },
{ Language.Persian, " و " }
};
private static readonly IList<NumberWord> NumberWords = new List<NumberWord>
{
new NumberWord { Group= DigitGroup.Ones, Language= Language.English, Names=
new List<string> { string.Empty, "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine" }},
new NumberWord { Group= DigitGroup.Ones, Language= Language.Persian, Names=
new List<string> { string.Empty, "یک", "دو", "سه", "چهار", "پنج", "شش", "هفت", "هشت", "نه" }},
new NumberWord { Group= DigitGroup.Teens, Language= Language.English, Names=
new List<string> { "Ten", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen" }},
new NumberWord { Group= DigitGroup.Teens, Language= Language.Persian, Names=
new List<string> { "ده", "یازده", "دوازده", "سیزده", "چهارده", "پانزده", "شانزده", "هفده", "هجده", "نوزده" }},
new NumberWord { Group= DigitGroup.Tens, Language= Language.English, Names=
new List<string> { "Twenty", "Thirty", "Forty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety" }},
new NumberWord { Group= DigitGroup.Tens, Language= Language.Persian, Names=
new List<string> { "بیست", "سی", "چهل", "پنجاه", "شصت", "هفتاد", "هشتاد", "نود" }},
new NumberWord { Group= DigitGroup.Hundreds, Language= Language.English, Names=
new List<string> {string.Empty, "One Hundred", "Two Hundred", "Three Hundred", "Four Hundred",
"Five Hundred", "Six Hundred", "Seven Hundred", "Eight Hundred", "Nine Hundred" }},
new NumberWord { Group= DigitGroup.Hundreds, Language= Language.Persian, Names=
new List<string> {string.Empty, "یکصد", "دویست", "سیصد", "چهارصد", "پانصد", "ششصد", "هفتصد", "هشتصد" , "نهصد" }},
new NumberWord { Group= DigitGroup.Thousands, Language= Language.English, Names=
new List<string> { string.Empty, " Thousand", " Million", " Billion"," Trillion", " Quadrillion", " Quintillion", " Sextillian",
" Septillion", " Octillion", " Nonillion", " Decillion", " Undecillion", " Duodecillion", " Tredecillion",
" Quattuordecillion", " Quindecillion", " Sexdecillion", " Septendecillion", " Octodecillion", " Novemdecillion",
" Vigintillion", " Unvigintillion", " Duovigintillion", " 10^72", " 10^75", " 10^78", " 10^81", " 10^84", " 10^87",
" Vigintinonillion", " 10^93", " 10^96", " Duotrigintillion", " Trestrigintillion" }},
new NumberWord { Group= DigitGroup.Thousands, Language= Language.Persian, Names=
new List<string> { string.Empty, " هزار", " میلیون", " میلیارد"," تریلیون", " Quadrillion", " Quintillion", " Sextillian",
" Septillion", " Octillion", " Nonillion", " Decillion", " Undecillion", " Duodecillion", " Tredecillion",
" Quattuordecillion", " Quindecillion", " Sexdecillion", " Septendecillion", " Octodecillion", " Novemdecillion",
" Vigintillion", " Unvigintillion", " Duovigintillion", " 10^72", " 10^75", " 10^78", " 10^81", " 10^84", " 10^87",
" Vigintinonillion", " 10^93", " 10^96", " Duotrigintillion", " Trestrigintillion" }},
};
private static readonly IDictionary<Language, string> Negative = new Dictionary<Language, string>
{
{ Language.English, "Negative " },
{ Language.Persian, "منهای " }
};
private static readonly IDictionary<Language, string> Zero = new Dictionary<Language, string>
{
{ Language.English, "Zero" },
{ Language.Persian, "صفر" }
};
#endregion Fields
#region Methods (7)
// Public Methods (5)
/// <summary>
/// display a numeric value using the equivalent text
/// </summary>
/// <param name="number">input number</param>
/// <param name="language">local language</param>
/// <returns>the equivalent text</returns>
public static string NumberToText(this int number, Language language)
{
return NumberToText((long)number, language);
}
/// <summary>
/// display a numeric value using the equivalent text
/// </summary>
/// <param name="number">input number</param>
/// <param name="language">local language</param>
/// <returns>the equivalent text</returns>
public static string NumberToText(this uint number, Language language)
{
return NumberToText((long)number, language);
}
/// <summary>
/// display a numeric value using the equivalent text
/// </summary>
/// <param name="number">input number</param>
/// <param name="language">local language</param>
/// <returns>the equivalent text</returns>
public static string NumberToText(this byte number, Language language)
{
return NumberToText((long)number, language);
}
/// <summary>
/// display a numeric value using the equivalent text
/// </summary>
/// <param name="number">input number</param>
/// <param name="language">local language</param>
/// <returns>the equivalent text</returns>
public static string NumberToText(this decimal number, Language language)
{
return NumberToText((long)number, language);
}
/// <summary>
/// display a numeric value using the equivalent text
/// </summary>
/// <param name="number">input number</param>
/// <param name="language">local language</param>
/// <returns>the equivalent text</returns>
public static string NumberToText(this double number, Language language)
{
return NumberToText((long)number, language);
}
/// <summary>
/// display a numeric value using the equivalent text
/// </summary>
/// <param name="number">input number</param>
/// <param name="language">local language</param>
/// <returns>the equivalent text</returns>
public static string NumberToText(this long number, Language language)
{
if (number == 0)
{
return Zero[language];
}
if (number < 0)
{
return Negative[language] + NumberToText(-number, language);
}
return wordify(number, language, string.Empty, 0);
}
// Private Methods (2)
private static string getName(int idx, Language language, DigitGroup group)
{
return NumberWords.Where(x => x.Group == group && x.Language == language).First().Names[idx];
}
private static string wordify(long number, Language language, string leftDigitsText, int thousands)
{
if (number == 0)
{
return leftDigitsText;
}
var wordValue = leftDigitsText;
if (wordValue.Length > 0)
{
wordValue += And[language];
}
if (number < 10)
{
wordValue += getName((int)number, language, DigitGroup.Ones);
}
else if (number < 20)
{
wordValue += getName((int)(number - 10), language, DigitGroup.Teens);
}
else if (number < 100)
{
wordValue += wordify(number % 10, language, getName((int)(number / 10 - 2), language, DigitGroup.Tens), 0);
}
else if (number < 1000)
{
wordValue += wordify(number % 100, language, getName((int)(number / 100), language, DigitGroup.Hundreds), 0);
}
else
{
wordValue += wordify(number % 1000, language, wordify(number / 1000, language, string.Empty, thousands + 1), 0);
}
if (number % 1000 == 0) return wordValue;
return wordValue + getName(thousands, language, DigitGroup.Thousands);
}
#endregion Methods
}
}