c# - sirve - no se puede convertir implícitamente el tipo ''string'' en string[]
¿Cómo puedo convertir un número entero en su representación verbal? (14)
Aquí está la versión en español:
public static string numeroALetras(int number)
{
if (number == 0)
return "cero";
if (number < 0)
return "menos " + numeroALetras(Math.Abs(number));
string words = "";
if ((number / 1000000) > 0)
{
words += numeroALetras(number / 1000000) + " millón ";
number %= 1000000;
}
if ((number / 1000) > 0)
{
words += (number / 1000) == 1? "mil ": numeroALetras(number / 1000) + " mil ";
number %= 1000;
}
if ((number / 100) == 1)
{
if (number == 100)
words += "cien";
else words += (number / 100)> 1? numeroALetras(number / 100) + " ciento ":"ciento ";
number %= 100;
}
if ((number / 100) > 1)
{
var hundredMap = new[] {"","", "dosc", "tresc", "cuatroc", "quin", "seisc", "sietec", "ochoc", "novec" };
if (number > 199)
words += hundredMap[number/100] + "ientos ";
else {
words += numeroALetras(number / 100) + " ientos ";
}
number %= 100;
}
if (number > 0)
{
if (words != "")
words += " ";
var unitsMap = new[] { "cero", "uno", "dos", "tres", "cuatro", "cinco", "seis", "siete", "ocho", "nueve", "diez", "once", "doce", "trece", "catorce", "quince", "dieciseis", "diecisiete", "dieciocho", "diecinueve", "veinte" };
var tensMap = new[] { "cero", "diez", "veinti", "treinta", "cuarenta", "cincuenta", "sesenta", "setenta", "ochenta", "noventa" };
if (number < 21)
words += unitsMap[number];
else
{
words += tensMap[number / 10];
if ((number % 10) > 0)
words += ((number % 10)>2?" y ": "") + unitsMap[number % 10];
}
}
return words;
}
¿Existe una biblioteca o una clase / función que pueda usar para convertir un número entero a su representación verbal?
Ejemplo de entrada:
4,567,788`
Ejemplo de salida:
Cuatro millones, Quinientos sesenta y siete mil setecientos ochenta y ocho
Actualmente, la mejor y más robusta biblioteca para esto es definitivamente Humanizer . Es de origen abierto y está disponible como nuget:
Console.WriteLine(4567788.ToWords()); // => four million five hundred and sixty-seven thousand seven hundred and eighty-eight
También tiene una amplia gama de herramientas que resuelven los pequeños problemas que tiene cada aplicación con string s, enum s, DateTime s, TimeSpan s, etc., y admite muchos idiomas diferentes.
Console.WriteLine(4567788.ToOrdinalWords().Underscore().Hyphenate().ApplyCase(LetterCasing.AllCaps)); // => FOUR-MILLION-FIVE-HUNDRED-AND-SIXTY-SEVEN-THOUSAND-SEVEN-HUNDRED-AND-EIGHTY-EIGHTH
Aquí está mi solución, espero que te ayude
namespace ConsoleApplication3
{
class Program
{
static void Main(string[] args)
{
string s = Console.ReadLine();
ConvertMyword(int.Parse(s));
Console.Read();
}
static void ConvertMyword(int number)
{
int flag = 0;
int lflag = 0;
string words = String.Empty;
string[] places = { "ones", "ten", "hundred", "thousand", "ten thousand", "lacs","tenlacs","crore","tencrore" };
string rawnumber = number.ToString();
char[] a = rawnumber.ToCharArray();
Array.Reverse(a);
for (int i = a.Length - 1; i >= 0; i--)
{
if (i % 2 == 0 && i > 2)
{
if (int.Parse(a[i].ToString()) > 1)
{
if (int.Parse(a[i - 1].ToString()) == 0)
{
words = words + getNumberStringty(int.Parse(a[i].ToString())) + " " + places[i - 1] + " ";
}
else
{
words = words + getNumberStringty(int.Parse(a[i].ToString())) + " ";
}
}
else if (int.Parse(a[i].ToString()) == 1)
{
if (int.Parse(a[i - 1].ToString())== 0)
{
words = words +"Ten" + " ";
}
else
{
words = words + getNumberStringteen(int.Parse(a[i - 1].ToString())) + " ";
}
flag = 1;
}
}
else
{
if (i == 1 || i == 0)
{
if (int.Parse(a[i].ToString()) > 1)
{
words = words + getNumberStringty(int.Parse(a[i].ToString())) + " " + getNumberString(int.Parse(a[0].ToString())) + " ";
break;
}
else if (int.Parse(a[i].ToString()) == 1)
{
if (int.Parse(a[i - 1].ToString()) == 0)
{
words = words + "Ten" + " ";
}
else
{
words = words + getNumberStringteen(int.Parse(a[i - 1].ToString())) + " ";
}
break;
}
else if (int.Parse(a[i - 1].ToString()) != 0)
{
words = words + getNumberString(int.Parse(a[i - 1].ToString())) + " ";
break;
}
else
{
break;
}
}
else
{
if (flag == 0)
{
for(int l=i;l>=0;l--)
{
if (int.Parse(a[l].ToString())!=0)
{
lflag = 1;
}
}
if (lflag == 1 && int.Parse(a[i].ToString())!=0)
{
words = words + getNumberString(int.Parse(a[i].ToString())) + " " + places[i] + " ";
lflag = 0;
}
else if(lflag == 0)
{
// words = words + getNumberString(int.Parse(a[i].ToString())) + " " + places[i] + " ";
lflag = 0;
break;
}
}
else
{
words = words + " " + places[i] + " ";
flag = 0;
}
}
}
}
Console.WriteLine(words);
}
static string getNumberString(int num)
{
string Word = String.Empty;
switch (num)
{
case 1:
Word = "one";
break;
case 2:
Word = "two";
break;
case 3:
Word = "three";
break;
case 4:
Word = "four";
break;
case 5:
Word = "five";
break;
case 6:
Word = "six";
break;
case 7:
Word = "seven";
break;
case 8:
Word = "eight";
break;
case 9:
Word = "nine";
break;
}
return Word;
}
static string getNumberStringty(int num)
{
string Word = String.Empty;
switch (num)
{
case 2:
Word = "twenty";
break;
case 3:
Word = "thirty";
break;
case 4:
Word = "fourty";
break;
case 5:
Word = "fifty";
break;
case 6:
Word = "sixty";
break;
case 7:
Word = "seventy";
break;
case 8:
Word = "eighty";
break;
case 9:
Word = "ninty";
break;
}
return Word;
}
static string getNumberStringteen(int num)
{
string Word = String.Empty;
switch (num)
{
case 1:
Word = "eleven";
break;
case 2:
Word = "tewlve";
break;
case 3:
Word = "thirteen";
break;
case 4:
Word = "fourteen";
break;
case 5:
Word = "fifteen";
break;
case 6:
Word = "sixteen";
break;
case 7:
Word = "seventeen";
break;
case 8:
Word = "eighteen";
break;
case 9:
Word = "ninteen";
break;
}
return Word;
}
}
}
Aunque esta es una pregunta muy antigua, he implementado esta funcionalidad con un enfoque más detallado
public static class NumberToWord
{
private static readonly Dictionary<long, string> MyDictionary = new Dictionary<long, string>();
static NumberToWord()
{
MyDictionary.Add(1000000000000000, "quadrillion");
MyDictionary.Add(1000000000000, "trillion");
MyDictionary.Add(1000000000, "billion");
MyDictionary.Add(1000000, "million");
MyDictionary.Add(1000, "thousand");
MyDictionary.Add(100, "hundread");
MyDictionary.Add(90, "ninety");
MyDictionary.Add(80, "eighty");
MyDictionary.Add(70, "seventy");
MyDictionary.Add(60, "sixty");
MyDictionary.Add(50, "fifty");
MyDictionary.Add(40, "fourty");
MyDictionary.Add(30, "thirty");
MyDictionary.Add(20, "twenty");
MyDictionary.Add(19, "nineteen");
MyDictionary.Add(18, "eighteen");
MyDictionary.Add(17, "seventeen");
MyDictionary.Add(16, "sixteen");
MyDictionary.Add(15, "fifteen");
MyDictionary.Add(14, "fourteen");
MyDictionary.Add(13, "thirteen");
MyDictionary.Add(12, "twelve");
MyDictionary.Add(11, "eleven");
MyDictionary.Add(10, "ten");
MyDictionary.Add(9, "nine");
MyDictionary.Add(8, "eight");
MyDictionary.Add(7, "seven");
MyDictionary.Add(6, "six");
MyDictionary.Add(5, "five");
MyDictionary.Add(4, "four");
MyDictionary.Add(3, "three");
MyDictionary.Add(2, "two");
MyDictionary.Add(1, "one");
MyDictionary.Add(0, "zero");
}
/// <summary>
/// To the verbal.
/// </summary>
/// <param name="value">The value.</param>
/// <returns></returns>
public static string ToVerbal(this int value)
{
return ToVerbal((long) value);
}
/// <summary>
/// To the verbal.
/// </summary>
/// <param name="value">The value.</param>
/// <returns></returns>
public static string ToVerbal(this long value)
{
if (value == 0) return MyDictionary[value];
if (value < 0)
return $" negative {ToVerbal(Math.Abs(value))}";
var builder = new StringBuilder();
for (var i = 1000000000000000; i >= 1000; i = i/1000)
value = ConstructWord(value, builder, i);
value = ConstructWord(value, builder, 100);
for (var i = 90; i >= 20; i = i - 10)
value = ConstructWordForTwoDigit(value, builder, i);
if (MyDictionary.ContainsKey(value))
builder.AppendFormat("{0}" + MyDictionary[value], builder.Length > 0
? " "
: string.Empty);
return builder.ToString();
}
private static long ConstructWord(long value, StringBuilder builder, long key)
{
if (value >= key)
{
var unit = (int) (value/key);
value -= unit*key;
builder.AppendFormat(" {0} {1} " + MyDictionary[key], builder.Length > 0
? ", "
: string.Empty, ToVerbal(unit));
}
return value;
}
private static long ConstructWordForTwoDigit(long value, StringBuilder builder, long key)
{
if (value >= key)
{
value -= key;
builder.AppendFormat(" {0} " + MyDictionary[key], builder.Length > 0
? " "
: string.Empty);
}
return value;
}
}
FYI: tengo interpolación de cadenas de usuario que solo está disponible en 4.6.1
El siguiente código de la aplicación de la consola C # dará a accept un valor monetario en números de hasta 2 decimales y lo imprimirá en inglés. Puede usarlo como referencia para lograr sus resultados.
namespace ConsoleApplication2
{
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
class Program
{
static void Main(string[] args)
{
bool repeat = true;
while (repeat)
{
string inputMonetaryValueInNumberic = string.Empty;
string centPart = string.Empty;
string dollarPart = string.Empty;
Console.Write("/nEnter the monetary value : ");
inputMonetaryValueInNumberic = Console.ReadLine();
inputMonetaryValueInNumberic = inputMonetaryValueInNumberic.TrimStart(''0'');
if (ValidateInput(inputMonetaryValueInNumberic))
{
if (inputMonetaryValueInNumberic.Contains(''.''))
{
centPart = ProcessCents(inputMonetaryValueInNumberic.Substring(inputMonetaryValueInNumberic.IndexOf(".") + 1));
dollarPart = ProcessDollar(inputMonetaryValueInNumberic.Substring(0, inputMonetaryValueInNumberic.IndexOf(".")));
}
else
{
dollarPart = ProcessDollar(inputMonetaryValueInNumberic);
}
centPart = string.IsNullOrWhiteSpace(centPart) ? string.Empty : " and " + centPart;
Console.WriteLine(string.Format("/n/n{0}{1}", dollarPart, centPart));
}
else
{
Console.WriteLine("Invalid Input..");
}
Console.WriteLine("/n/nPress any key to continue or Escape of close : ");
var loop = Console.ReadKey();
repeat = !loop.Key.ToString().Contains("Escape");
Console.Clear();
}
}
private static string ProcessCents(string cents)
{
string english = string.Empty;
string dig3 = Process3Digit(cents);
if (!string.IsNullOrWhiteSpace(dig3))
{
dig3 = string.Format("{0} {1}", dig3, GetSections(0));
}
english = dig3 + english;
return english;
}
private static string ProcessDollar(string dollar)
{
string english = string.Empty;
foreach (var item in Get3DigitList(dollar))
{
string dig3 = Process3Digit(item.Value);
if (!string.IsNullOrWhiteSpace(dig3))
{
dig3 = string.Format("{0} {1}", dig3, GetSections(item.Key));
}
english = dig3 + english;
}
return english;
}
private static string Process3Digit(string digit3)
{
string result = string.Empty;
if (Convert.ToInt32(digit3) != 0)
{
int place = 0;
Stack<string> monetaryValue = new Stack<string>();
for (int i = digit3.Length - 1; i >= 0; i--)
{
place += 1;
string stringValue = string.Empty;
switch (place)
{
case 1:
stringValue = GetOnes(digit3[i].ToString());
break;
case 2:
int tens = Convert.ToInt32(digit3[i]);
if (tens == 1)
{
if (monetaryValue.Count > 0)
{
monetaryValue.Pop();
}
stringValue = GetTens((digit3[i].ToString() + digit3[i + 1].ToString()));
}
else
{
stringValue = GetTens(digit3[i].ToString());
}
break;
case 3:
stringValue = GetOnes(digit3[i].ToString());
if (!string.IsNullOrWhiteSpace(stringValue))
{
string postFixWith = " Hundred";
if (monetaryValue.Count > 0)
{
postFixWith = postFixWith + " And";
}
stringValue += postFixWith;
}
break;
}
if (!string.IsNullOrWhiteSpace(stringValue))
monetaryValue.Push(stringValue);
}
while (monetaryValue.Count > 0)
{
result += " " + monetaryValue.Pop().ToString().Trim();
}
}
return result;
}
private static Dictionary<int, string> Get3DigitList(string monetaryValueInNumberic)
{
Dictionary<int, string> hundredsStack = new Dictionary<int, string>();
int counter = 0;
while (monetaryValueInNumberic.Length >= 3)
{
string digit3 = monetaryValueInNumberic.Substring(monetaryValueInNumberic.Length - 3, 3);
monetaryValueInNumberic = monetaryValueInNumberic.Substring(0, monetaryValueInNumberic.Length - 3);
hundredsStack.Add(++counter, digit3);
}
if (monetaryValueInNumberic.Length != 0)
hundredsStack.Add(++counter, monetaryValueInNumberic);
return hundredsStack;
}
private static string GetTens(string tensPlaceValue)
{
string englishEquvalent = string.Empty;
int value = Convert.ToInt32(tensPlaceValue);
Dictionary<int, string> tens = new Dictionary<int, string>();
tens.Add(2, "Twenty");
tens.Add(3, "Thirty");
tens.Add(4, "Forty");
tens.Add(5, "Fifty");
tens.Add(6, "Sixty");
tens.Add(7, "Seventy");
tens.Add(8, "Eighty");
tens.Add(9, "Ninty");
tens.Add(10, "Ten");
tens.Add(11, "Eleven");
tens.Add(12, "Twelve");
tens.Add(13, "Thrteen");
tens.Add(14, "Fourteen");
tens.Add(15, "Fifteen");
tens.Add(16, "Sixteen");
tens.Add(17, "Seventeen");
tens.Add(18, "Eighteen");
tens.Add(19, "Ninteen");
if (tens.ContainsKey(value))
{
englishEquvalent = tens[value];
}
return englishEquvalent;
}
private static string GetOnes(string onesPlaceValue)
{
int value = Convert.ToInt32(onesPlaceValue);
string englishEquvalent = string.Empty;
Dictionary<int, string> ones = new Dictionary<int, string>();
ones.Add(1, " One");
ones.Add(2, " Two");
ones.Add(3, " Three");
ones.Add(4, " Four");
ones.Add(5, " Five");
ones.Add(6, " Six");
ones.Add(7, " Seven");
ones.Add(8, " Eight");
ones.Add(9, " Nine");
if (ones.ContainsKey(value))
{
englishEquvalent = ones[value];
}
return englishEquvalent;
}
private static string GetSections(int section)
{
string sectionName = string.Empty;
switch (section)
{
case 0:
sectionName = "Cents";
break;
case 1:
sectionName = "Dollars";
break;
case 2:
sectionName = "Thousand";
break;
case 3:
sectionName = "Million";
break;
case 4:
sectionName = "Billion";
break;
case 5:
sectionName = "Trillion";
break;
case 6:
sectionName = "Zillion";
break;
}
return sectionName;
}
private static bool ValidateInput(string input)
{
return Regex.IsMatch(input, "[0-9]{1,18}(//.[0-9]{1,2})?"))
}
}
}
En caso de que alguien quiera una versión de JavaScript
Number.prototype.numberToWords = function () {
var unitsMap = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"];
var tensMap = ["zero", "ten", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety"];
var num = this.valueOf();
if (Math.round(num == 0)) {
return "zero";
}
if (num < 0) {
var positivenum = Math.abs(num);
return "minus " + Number(positivenum).numberToWords();
}
var words = "";
if (Math.floor(num / 1000000) > 0) {
words += Math.floor(num / 1000000).numberToWords() + " million ";
num = Math.floor(num % 1000000);
}
if (Math.floor(num / 1000) > 0) {
words += Math.floor(num / 1000).numberToWords() + " thousand ";
num = Math.floor(num % 1000);
}
if (Math.floor(num / 100) > 0) {
words += Math.floor(num / 100).numberToWords() + " hundred ";
num = Math.floor(num % 100);
}
if (Math.floor(num > 0)) {
if (words != "") {
words += "and ";
}
if (num < 20) {
words += unitsMap[num];
}
else {
words += tensMap[Math.floor(num / 10)];
if ((num % 10) > 0) {
words += "-" + unitsMap[Math.round(num % 10)];
}
}
}
return words.trim();
}
Esta clase convierte perfectamente su flotador o doble (hasta 2 de precisión). Simplemente copie y pegue su IDE y vea el resultado.
class ConversionClass
{
private static Dictionary<int, string> InitialNumbers = new Dictionary<int, string>();
private static Dictionary<int, string> MultipleOfTen = new Dictionary<int, string>();
private static Dictionary<int, string> MultipleOfHundered = new Dictionary<int, string>();
private static void InitializeStatic()
{
//InitialNumbers.Add(0, "zero");
InitialNumbers.Add(1, "one");
InitialNumbers.Add(2, "two");
InitialNumbers.Add(3, "three");
InitialNumbers.Add(4, "four");
InitialNumbers.Add(5, "five");
InitialNumbers.Add(6, "six");
InitialNumbers.Add(7, "seven");
InitialNumbers.Add(8, "eight");
InitialNumbers.Add(9, "nine");
InitialNumbers.Add(10, "ten");
InitialNumbers.Add(11, "eleven");
InitialNumbers.Add(12, "tweleve");
InitialNumbers.Add(13, "thirteen");
InitialNumbers.Add(14, "fourteen");
InitialNumbers.Add(15, "fifteen");
InitialNumbers.Add(16, "sixteen");
InitialNumbers.Add(17, "seventeen");
InitialNumbers.Add(18, "eighteen");
InitialNumbers.Add(19, "nineteen");
MultipleOfTen.Add(1, "ten");
MultipleOfTen.Add(2, "twenty");
MultipleOfTen.Add(3, "thirty");
MultipleOfTen.Add(4, "fourty");
MultipleOfTen.Add(5, "fifty");
MultipleOfTen.Add(6, "sixty");
MultipleOfTen.Add(7, "seventy");
MultipleOfTen.Add(8, "eighty");
MultipleOfTen.Add(9, "ninety");
MultipleOfHundered.Add(2, "hundred"); // 100
MultipleOfHundered.Add(3, "thousand"); // 1 000
MultipleOfHundered.Add(4, "thousand"); // 10 000
MultipleOfHundered.Add(5, "thousand"); // 100 000
MultipleOfHundered.Add(6, "million"); // 1 000 000
MultipleOfHundered.Add(7, "million"); // 100 000 000
MultipleOfHundered.Add(8, "million"); // 1 000 000 000
MultipleOfHundered.Add(9, "billion"); // 1 000 000 000 000
}
public static void Main()
{
InitializeStatic();
Console.WriteLine("Enter number :");
var userInput = Console.ReadLine();
double userValue ;
if (double.TryParse(userInput, out userValue)) // userValue = 193524019.50
{
int decimalPortion = (int)userValue;
//var fractionPortion = Math.Ceiling(((userValue < 1.0) ? userValue : (userValue % Math.Floor(userValue))) * 100);
int fractionPortion = (int)(userValue * 100) - ((int)userValue * 100);
int digit; int power;
StringBuilder numberInText = new StringBuilder();
while (decimalPortion > 0)
{
GetDigitAndPower(decimalPortion, out digit, out power);
numberInText.Append(ConvertToText(ref decimalPortion, ref digit, ref power));
if (decimalPortion > 0)
{
decimalPortion = GetReminder(decimalPortion, digit, power);
}
}
numberInText.Append(" point ");
while (fractionPortion > 0)
{
GetDigitAndPower(fractionPortion, out digit, out power);
numberInText.Append(ConvertToText(ref fractionPortion, ref digit, ref power));
if (fractionPortion > 0)
{
fractionPortion = GetReminder(fractionPortion, digit, power);
}
}
Console.WriteLine(numberInText.ToString());
}
Console.ReadKey();
}
private static int GetReminder(int orgValue, int digit, int power)
{
int returningValue = orgValue - (digit * (int)Math.Pow(10, power));
return returningValue;
}
private static void GetDigitAndPower(int originalValue, out int digit, out int power)
{
for (power = 0, digit = 0; power < 10; power++)
{
var divisionFactor = (int)Math.Pow(10, power);
int operationalValue = (originalValue / divisionFactor);
if (operationalValue <= 0)
{
power = power - 1;
digit = (int)(originalValue / Math.Pow(10, power));
break;
}
}
}
private static string ConvertToText(ref int orgValue, ref int digit, ref int power)
{
string numberToText = string.Empty;
if (power < 2)
{
if (InitialNumbers.ContainsKey(orgValue))
{
//This is for number 1 to 19
numberToText = InitialNumbers[orgValue];
orgValue = 0;
}
else if (MultipleOfTen.ContainsKey(digit))
{
//This is for multiple of 10 (20,30,..90)
numberToText = MultipleOfTen[digit];
}
}
else
{
if (power < 4)
{
numberToText = string.Format("{0} {1}", InitialNumbers[digit], MultipleOfHundered[power]);
}
else
{
StringBuilder sb = new StringBuilder();
int multiplicationFactor = power / 3;
int innerOrgValue = (int) (orgValue / Math.Pow(10, (multiplicationFactor * 3)));
digit = innerOrgValue;
var multiple = MultipleOfHundered[power];
power = power - ((int)Math.Ceiling(Math.Log10(innerOrgValue)) - 1);
int innerPower = 0;
int innerDigit = 0;
while (innerOrgValue > 0)
{
GetDigitAndPower(innerOrgValue, out innerDigit, out innerPower);
var text = ConvertToText(ref innerOrgValue, ref innerDigit, ref innerPower);
sb.Append(text);
sb.Append(" ");
if (innerOrgValue > 0)
{
innerOrgValue = GetReminder(innerOrgValue, innerDigit, innerPower);
}
}
sb.Append(multiple);
numberToText = sb.ToString();
}
}
return numberToText + " ";
}
}
Me encargaron crear una API WEB que convierta números en palabras usando C #.
Puede ser un número entero o con puntos decimales en 48 horas.
La llamada procederá de una aplicación de front-end que utiliza el método Ajax Post y devuelve el resultado convertido en la página web.
He compartido públicamente ese proyecto en GitHub para referencia: https://github.com/marvinglennlacuna/NumbersToWordsConverter.Api
Con la siguiente implementación técnica en colocado:
- MVC estructurado
- Controlador API
- Servicio
- Modelo
- Manejo de errores
- Pruebas unitarias usando MSTest
- Cobertura del código: 98%
- Jquery
Y con documentación técnica sobre lo siguiente también:
- Propósito
- Requisitos previos
- Requerimientos Funcionales
- Diagrama de proceso y salida
** Resultado a través de la página web (US-001) **
US-001 Convertir números en palabras a través del proceso de página web
US-001 Convertir números en palabras a través de la página web de salida
Resultado vía cartero (US-002)
US-002 - Convertir números en palabras mediante el proceso del cartero
US-002 - Convertir números en palabras a través de la salida del cartero
Creo que vale la pena compartir una solución de trabajo en caso de que la necesite como referencia en una entrevista / prueba de código / escuela o solo por diversión.
Saludos, Marvin
Realmente necesitaba esto para una aplicación en la que estoy trabajando, pero no estaba contento con ninguna de las soluciones aquí.Para su información, esta solución aprovecha el soporte de C # 7.0 para funciones locales. También utilicé el nuevo separador de dígitos para hacer que los números más grandes sean más legibles.
public static class NumberExtensions
{
private const string negativeWord = "negative";
private static readonly Dictionary<ulong, string> _wordMap = new Dictionary<ulong, string>
{
[1_000_000_000_000_000_000] = "quintillion",
[1_000_000_000_000_000] = "quadrillion",
[1_000_000_000_000] = "trillion",
[1_000_000_000] = "billion",
[1_000_000] = "million",
[1_000] = "thousand",
[100] = "hundred",
[90] = "ninety",
[80] = "eighty",
[70] = "seventy",
[60] = "sixty",
[50] = "fifty",
[40] = "forty",
[30] = "thirty",
[20] = "twenty",
[19] = "nineteen",
[18] = "eighteen",
[17] = "seventeen",
[16] = "sixteen",
[15] = "fifteen",
[14] = "fourteen",
[13] = "thirteen",
[12] = "twelve",
[11] = "eleven",
[10] = "ten",
[9] = "nine",
[8] = "eight",
[7] = "seven",
[6] = "six",
[5] = "five",
[4] = "four",
[3] = "three",
[2] = "two",
[1] = "one",
[0] = "zero"
};
public static string ToWords(this short num)
{
var words = ToWords((ulong)Math.Abs(num));
return num < 0 ? $"{negativeWord} {words}" : words;
}
public static string ToWords(this ushort num)
{
return ToWords((ulong)num);
}
public static string ToWords(this int num)
{
var words = ToWords((ulong)Math.Abs(num));
return num < 0 ? $"{negativeWord} {words}" : words;
}
public static string ToWords(this uint num)
{
return ToWords((ulong)num);
}
public static string ToWords(this long num)
{
var words = ToWords((ulong)Math.Abs(num));
return num < 0 ? $"{negativeWord} {words}" : words;
}
public static string ToWords(this ulong num)
{
var sb = new StringBuilder();
var delimiter = String.Empty;
void AppendWords(ulong dividend)
{
void AppendDelimitedWord(ulong key)
{
sb.Append(delimiter);
sb.Append(_wordMap[key]);
delimiter = 20 <= key && key < 100 ? "-" : " ";
}
if (_wordMap.ContainsKey(dividend))
{
AppendDelimitedWord(dividend);
}
else
{
var divisor = _wordMap.First(m => m.Key <= dividend).Key;
var quotient = dividend / divisor;
var remainder = dividend % divisor;
if (quotient > 0 && divisor >= 100)
{
AppendWords(quotient);
}
AppendDelimitedWord(divisor);
if (remainder > 0)
{
AppendWords(remainder);
}
}
}
AppendWords(num);
return sb.ToString();
}
}
La carne está en la última ToWordssobrecarga.
Solución que toma menos código.
La parte más importante es solo líneas de pareja:
static Func<long, string> remainder = t => t > 0 ? " " + ToEN(t) : "";
public static string ToEN(this long val, double d = 20, long th = 20)
{
switch ((long)d)
{
case 20: return val >= d ? ToEN(val, 1e2) : en[val];
case 100: return val >= d ? ToEN(val, 1e3, 100) : en[val / 10 * 10] + remainder(val % 10);
default: return val >= d ? ToEN(val, d * 1e3,(long)d) : ToEN(val / th) + " " + en[th] + remainder(val % th);
}
}
El código completo está disponible aquí https://dotnetfiddle.net/wjr4hF
Versión completamente recursiva:
private static string[] ones = {
"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine",
"ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen",
};
private static string[] tens = { "zero", "ten", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety" };
private static string[] thous = { "hundred", "thousand", "million", "billion", "trillion", "quadrillion" };
public static string ToWords(decimal number)
{
if (number < 0)
return "negative " + ToWords(Math.Abs(number));
int intPortion = (int)number;
int decPortion = (int)((number - intPortion) * (decimal) 100);
return string.Format("{0} dollars and {1} cents", ToWords(intPortion), ToWords(decPortion));
}
private static string ToWords(int number, string appendScale = "")
{
string numString = "";
if (number < 100)
{
if (number < 20)
numString = ones[number];
else
{
numString = tens[number / 10];
if ((number % 10) > 0)
numString += "-" + ones[number % 10];
}
}
else
{
int pow = 0;
string powStr = "";
if (number < 1000) // number is between 100 and 1000
{
pow = 100;
powStr = thous[0];
}
else // find the scale of the number
{
int log = (int)Math.Log(number, 1000);
pow = (int)Math.Pow(1000, log);
powStr = thous[log];
}
numString = string.Format("{0} {1}", ToWords(number / pow, powStr), ToWords(number % pow)).Trim();
}
return string.Format("{0} {1}", numString, appendScale).Trim();
}
La corriente funciona hasta los cuatrillones (de corta escala). Se puede agregar soporte adicional (para números más grandes, o para la escala larga ) simplemente cambiando la variable thous .
Tal vez, innecesariamente complejo (el caso especial de cientos me molesta un poco), dado que la modificación de la versión no recursiva también es bastante simple.
si usa el código que se encuentra en: convertir números en palabras C # y lo necesita para números decimales, aquí está cómo hacerlo:
public string DecimalToWords(decimal number)
{
if (number == 0)
return "zero";
if (number < 0)
return "minus " + DecimalToWords(Math.Abs(number));
string words = "";
int intPortion = (int)number;
decimal fraction = (number - intPortion)*100;
int decPortion = (int)fraction;
words = NumericToWords(intPortion);
if (decPortion > 0)
{
words += " and ";
words += NumericToWords(decPortion);
}
return words;
}
http://www.exchangecore.com/blog/convert-number-words-c-sharp-console-application/ tiene algo de script C # que parece manejar números muy grandes y decimales muy pequeños.
using System;
using System.Collections.Generic;
using System.Text;
namespace NumWords
{
class Program
{
// PROGRAM HANDLES NEGATIVE AND POSITIVE DOUBLES
static String NumWordsWrapper(double n)
{
string words = "";
double intPart;
double decPart = 0;
if (n == 0)
return "zero";
try {
string[] splitter = n.ToString().Split(''.'');
intPart = double.Parse(splitter[0]);
decPart = double.Parse(splitter[1]);
} catch {
intPart = n;
}
words = NumWords(intPart);
if (decPart > 0) {
if (words != "")
words += " and ";
int counter = decPart.ToString().Length;
switch (counter) {
case 1: words += NumWords(decPart) + " tenths"; break;
case 2: words += NumWords(decPart) + " hundredths"; break;
case 3: words += NumWords(decPart) + " thousandths"; break;
case 4: words += NumWords(decPart) + " ten-thousandths"; break;
case 5: words += NumWords(decPart) + " hundred-thousandths"; break;
case 6: words += NumWords(decPart) + " millionths"; break;
case 7: words += NumWords(decPart) + " ten-millionths"; break;
}
}
return words;
}
static String NumWords(double n) //converts double to words
{
string[] numbersArr = new string[] { "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen" };
string[] tensArr = new string[] { "twenty", "thirty", "fourty", "fifty", "sixty", "seventy", "eighty", "ninty" };
string[] suffixesArr = new string[] { "thousand", "million", "billion", "trillion", "quadrillion", "quintillion", "sextillion", "septillion", "octillion", "nonillion", "decillion", "undecillion", "duodecillion", "tredecillion", "Quattuordecillion", "Quindecillion", "Sexdecillion", "Septdecillion", "Octodecillion", "Novemdecillion", "Vigintillion" };
string words = "";
bool tens = false;
if (n < 0) {
words += "negative ";
n *= -1;
}
int power = (suffixesArr.Length + 1) * 3;
while (power > 3) {
double pow = Math.Pow(10, power);
if (n >= pow) {
if (n % pow > 0) {
words += NumWords(Math.Floor(n / pow)) + " " + suffixesArr[(power / 3) - 1] + ", ";
} else if (n % pow == 0) {
words += NumWords(Math.Floor(n / pow)) + " " + suffixesArr[(power / 3) - 1];
}
n %= pow;
}
power -= 3;
}
if (n >= 1000) {
if (n % 1000 > 0) words += NumWords(Math.Floor(n / 1000)) + " thousand, ";
else words += NumWords(Math.Floor(n / 1000)) + " thousand";
n %= 1000;
}
if (0 <= n && n <= 999) {
if ((int)n / 100 > 0) {
words += NumWords(Math.Floor(n / 100)) + " hundred";
n %= 100;
}
if ((int)n / 10 > 1) {
if (words != "")
words += " ";
words += tensArr[(int)n / 10 - 2];
tens = true;
n %= 10;
}
if (n < 20 && n > 0) {
if (words != "" && tens == false)
words += " ";
words += (tens ? "-" + numbersArr[(int)n - 1] : numbersArr[(int)n - 1]);
n -= Math.Floor(n);
}
}
return words;
}
static void Main(string[] args)
{
Console.Write("Enter a number to convert to words: ");
Double n = Double.Parse(Console.ReadLine());
Console.WriteLine("{0}", NumWordsWrapper(n));
}
}
}
EDITAR: trajo el código de la publicación del blog
Imports System.Text
Public Class NumberWriter
Public Shared Function Parse(ByVal Number As String) As String
If Not AreNumbers(Number) Then Return ""
Dim TempQueue As New Queue(Of String)
For Each ItemA As Char In Number.Replace(",", "").Reverse
TempQueue.Enqueue(ItemA)
Next
Dim Blocks As New List(Of String)
Dim BlockEmpty As New List(Of Boolean)
Do
Dim TempBlock As New StringBuilder(3)
TempBlock.Append(TempQueue.Dequeue)
If TempQueue.Count > 0 Then
TempBlock.Append(TempQueue.Dequeue)
If TempQueue.Count > 0 Then
TempBlock.Append(TempQueue.Dequeue)
End If
End If
Blocks.Add(StrReverse(TempBlock.ToString))
BlockEmpty.Add(TempBlock.ToString = "000")
If TempQueue.Count < 1 Then Exit Do
Loop
Dim ResultStack As New Stack(Of String)
For int1 As Integer = 0 To Blocks.Count - 1
ResultStack.Push(ReadBlock(Blocks(int1)) & If(Not int1 = 0, If(Not BlockEmpty(int1), " " & CapitalizeWord(GetPlaceValueSet(int1)) & If(BlockEmpty(int1 - 1), "", ", "), ""), ""))
Next
Dim Result1 As String = ""
Do Until ResultStack.Count < 1
Result1 &= ResultStack.Pop
Loop
Return RemoveGrammarErrors(Result1)
End Function
Private Shared Function RemoveGrammarErrors(ByVal Str As String) As String
Dim tstr As String = Str
tstr.Replace(" ", " ")
tstr.Replace(" , ", ", ")
Return tstr
End Function
Private Shared Function AreNumbers(ByVal Str1 As String) As Boolean
Dim Numbers() As String = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", ","}
For Each ItemA As Char In Str1
Dim IsN As Boolean = False
For Each ItemB As String In Numbers
If ItemA = ItemB Then IsN = True
Next
If Not IsN Then
Return False
End If
Next
Return True
End Function
Private Shared Function ReadBlock(ByVal Block As String)
Select Case Block.Length
Case 1
Return ReadSingleDigit(Block)
Case 2
Return ReadTwoDigits(Block)
Case 3
Return ReadThreeDigits(Block)
Case Else
Throw New Exception
End Select
End Function
Private Shared Function ReadThreeDigits(ByVal Digits As String)
If Digits.Length > 3 Then Throw New ArgumentException("There are too many digits.")
Dim Result As String = ""
If Not Digits(0) = "0" Then
Result &= ReadSingleDigit(Digits(0)) & " Hundred "
End If
Result &= ReadTwoDigits(Digits.Substring(1))
Return Result
End Function
Private Shared Function ReadTwoDigits(ByVal Digits As String)
If Digits.Length > 2 Then Throw New ArgumentException("There are too many digits.")
Select Case Digits(0)
Case "0"
Return ReadSingleDigit(Digits(1))
Case "1"
Return ReadTeenNumber(Digits)
Case Else
Return ReadFirstInNumberPair(Digits(0)) & If(Digits(1) = "0", "", "-" & ReadSingleDigit(Digits(1)))
End Select
End Function
Private Shared Function ReadSingleDigit(ByVal Digit As String) As String
If Not Digit.Length = 1 Then Throw New ArgumentException("There must be only one digit and it must be more than zero.")
Select Case Digit
Case "0"
Return ""
Case "1"
Return "One"
Case "2"
Return "Two"
Case "3"
Return "Three"
Case "4"
Return "Four"
Case "5"
Return "Five"
Case "6"
Return "Six"
Case "7"
Return "Seven"
Case "8"
Return "Eight"
Case "9"
Return "Nine"
Case Else
Throw New Exception()
End Select
End Function
Private Shared Function ReadTeenNumber(ByVal Num As String) As String
Select Case Num
Case "11"
Return "Eleven"
Case "12"
Return "Twelve"
Case "13"
Return "Thirteen"
Case "14"
Return "Fourteen"
Case "15"
Return "Fifteen"
Case "16"
Return "Sixteen"
Case "17"
Return "Seventeen"
Case "18"
Return "Eighteen"
Case "19"
Return "Nineteen"
Case Else
Throw New Exception()
End Select
End Function
Private Shared Function ReadFirstInNumberPair(ByVal Num As String) As String
If Not (Num > 1 OrElse Num < 10) Then Throw New ArgumentException("Number must be more than 1 and less than 10")
Select Case Num
Case "2"
Return "Twenty"
Case "3"
Return "Thirty"
Case "4"
Return "Fourty"
Case "5"
Return "Fifty"
Case "6"
Return "Sixty"
Case "7"
Return "Seventy"
Case "8"
Return "Eighty"
Case "9"
Return "Ninety"
Case Else
Throw New Exception()
End Select
End Function
Private Shared Function CapitalizeWord(ByVal Word As String) As String
Return Word.Substring(0, 1).ToUpper & Word.Substring(1)
End Function
Private Shared Function GetPlaceValueSet(ByVal Num As Byte) As String
Select Case Num
Case 0
Return "" ''Hundreds
Case 1
Return "Thousand"
Case 2
Return "Million"
Case 3
Return "Billion"
Case 4
Return "Trillion"
Case 5
Return "Quadrillion"
Case 6
Return "Quintillion"
Case 7
Return "Sextillion"
Case 8
Return "Septillion"
Case 9
Return "Octillion"
Case 10
Return "Nonillion"
Case 11
Return "octillion"
Case 12
Return "nonillion"
Case 13
Return "decillion"
Case 14
Return "undecillion"
Case 15
Return "dodecillion,"
Case 16
Return "tredecillion"
Case 17
Return "quattuordecillion"
Case 18
Return "quindecillion"
Case 19
Return "sexdecillion"
Case 20
Return "septendecillion"
Case 21
Return "octodecillion"
Case 22
Return "novemdecillion"
Case 23
Return "vigintillion"
Case 24
Return "unvigintillion"
Case 25
Return "dovigintillion"
Case 26
Return "trevigintillion"
Case 27
Return "quattuorvigintillion"
Case 28
Return "quinvigintillion"
Case 29
Return "sexvigintillion"
Case 30
Return "septenvigintillion"
Case 31
Return "octovigintillion"
Case 32
Return "novemvigintillion"
Case 33
Return "trigintillion"
Case 34
Return "untrigintillion"
Case 35
Return "dotrigintillion"
Case 36
Return "tretrigintillion"
Case 37
Return "quattuortrigintillion"
Case 38
Return "quintrigintillion"
Case 39
Return "sextrigintillion"
Case 40
Return "septentrigintillion"
Case 41
Return "octotrigintillion"
Case Else
Throw New Exception
End Select
End Function
End Class
Lo siento, está en VB.NET, pero funciona por completo. Es una forma. Número a Verbal. Maneja números de hasta 123 caracteres de largo, creo.