将整数转换为书面数字
有没有一种有效的方法将整数转换为书面数字，例如：
string Written = IntegerToWritten(21); 会返回“二十一”。
有没有办法做到这一点，不涉及大量的查找表？
这应该工作得很好：
public static class HumanFriendlyInteger { static string[] ones = new string[] { "", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine" }; static string[] teens = new string[] { "Ten", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen" }; static string[] tens = new string[] { "Twenty", "Thirty", "Forty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety" }; static string[] thousandsGroups = { "", " Thousand", " Million", " Billion" }; private static string FriendlyInteger(int n, string leftDigits, int thousands) { if (n == 0) { return leftDigits; } string friendlyInt = leftDigits; if (friendlyInt.Length > 0) { friendlyInt += " "; } if (n < 10) { friendlyInt += ones[n]; } else if (n < 20) { friendlyInt += teens[n - 10]; } else if (n < 100) { friendlyInt += FriendlyInteger(n % 10, tens[n / 10 - 2], 0); } else if (n < 1000) { friendlyInt += FriendlyInteger(n % 100, (ones[n / 100] + " Hundred"), 0); } else { friendlyInt += FriendlyInteger(n % 1000, FriendlyInteger(n / 1000, "", thousands+1), 0); if (n % 1000 == 0) { return friendlyInt; } } return friendlyInt + thousandsGroups[thousands]; } public static string IntegerToWritten(int n) { if (n == 0) { return "Zero"; } else if (n < 0) { return "Negative " + IntegerToWritten(-n); } return FriendlyInteger(n, "", 0); } }
（编辑修正一个错误百万，十亿等）
我使用这个代码。它是VB代码，但你可以很容易地把它转换成C＃。 有用
Function NumberToText(ByVal n As Integer) As String Select Case n Case 0 Return "" Case 1 To 19 Dim arr() As String = {"One","Two","Three","Four","Five","Six","Seven", _ "Eight","Nine","Ten","Eleven","Twelve","Thirteen","Fourteen", _ "Fifteen","Sixteen","Seventeen","Eighteen","Nineteen"} Return arr(n-1) & " " Case 20 to 99 Dim arr() as String = {"Twenty","Thirty","Forty","Fifty","Sixty","Seventy","Eighty","Ninety"} Return arr(n\10 -2) & " " & NumberToText(n Mod 10) Case 100 to 199 Return "One Hundred " & NumberToText(n Mod 100) Case 200 to 999 Return NumberToText(n\100) & "Hundreds " & NumberToText(n mod 100) Case 1000 to 1999 Return "One Thousand " & NumberToText(n Mod 1000) Case 2000 to 999999 Return NumberToText(n\1000) & "Thousands " & NumberToText(n Mod 1000) Case 1000000 to 1999999 Return "One Million " & NumberToText(n Mod 1000000) Case 1000000 to 999999999 Return NumberToText(n\1000000) & "Millions " & NumberToText(n Mod 1000000) Case 1000000000 to 1999999999 Return "One Billion " & NumberTotext(n Mod 1000000000) Case Else Return NumberToText(n\1000000000) & "Billion " _ & NumberToText(n mod 1000000000) End Select End Function
这里是在C＃中的代码
public static string AmountInWords(double amount) { var n = (int)amount; if (n == 0) return ""; else if (n > 0 && n <= 19) { var arr = new string[] { "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen" }; return arr[n - 1] + " "; } else if (n >= 20 && n <= 99) { var arr = new string[] { "Twenty", "Thirty", "Forty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety" }; return arr[n / 10 - 2] + " " + AmountInWords(n % 10); } else if (n >= 100 && n <= 199) { return "One Hundred " + AmountInWords(n % 100); } else if (n >= 200 && n <= 999) { return AmountInWords(n / 100) + "Hundred " + AmountInWords(n % 100); } else if (n >= 1000 && n <= 1999) { return "One Thousand " + AmountInWords(n % 1000); } else if (n >= 2000 && n <= 999999) { return AmountInWords(n / 1000) + "Thousand " + AmountInWords(n % 1000); } else if (n >= 1000000 && n <= 1999999) { return "One Million " + AmountInWords(n % 1000000); } else if (n >= 1000000 && n <= 999999999) { return AmountInWords(n / 1000000) + "Million " + AmountInWords(n % 1000000); } else if (n >= 1000000000 && n <= 1999999999) { return "One Billion " + AmountInWords(n % 1000000000); } else { return AmountInWords(n / 1000000000) + "Billion " + AmountInWords(n % 1000000000); } }
我使用这个方便的库称为人性化。
https://github.com/Humanizr/Humanizer
它支持多种文化，不仅可以将数字转换成单词，还可以将其转换成date，使用起来非常简单。
以下是我如何使用它：
int someNumber = 543; var culture = System.Globalization.CultureInfo("en-US"); var result = someNumber.ToWords(culture); // 543 -> five hundred forty-three
瞧！
贾斯汀罗杰斯有一个“NumbersToEnglish”类应该很好地为你工作！
初始张贴。
http://weblogs.asp.net/justin_rogers/archive/2004/06/09/151675.aspx
最终的源代码
http://weblogs.asp.net/justin_rogers/articles/151757.aspx
它有一个内部的查找表，但我真的不知道你将如何能摆脱这一点。
为什么海量查询表？
string GetWrittenInteger(int n) { string[] a = new string[] {"One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine" } string[] b = new string[] { "Ten", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen" } string[] c = new string[] {"Twenty", "Thirty", "Forty", "Sixty", "Seventy", "Eighty", "Ninety"}; string[] d = new string[] {"Hundred", "Thousand", "Million"} string s = n.ToString(); for (int i = 0; i < s.Length; i++) { // logic (too lazy but you get the idea) } }
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace tryingstartfror4digits { class Program { static void Main(string[] args) { Program pg = new Program(); Console.WriteLine("Enter ur number"); int num = Convert.ToInt32(Console.ReadLine()); if (num <= 19) { string g = pg.first(num); Console.WriteLine("The number is " + g); } else if ((num >= 20) && (num <= 99)) { if (num % 10 == 0) { string g = pg.second(num / 10); Console.WriteLine("The number is " + g); } else { string g = pg.second(num / 10) + pg.first(num % 10); Console.WriteLine("The number is " + g); } } else if ((num >= 100) && (num <= 999)) { int k = num % 100; string g = pg.first(num / 100) +pg.third(0) + pg.second(k / 10)+pg.first(k%10); Console.WriteLine("The number is " + g); } else if ((num >= 1000) && (num <= 19999)) { int h = num % 1000; int k = h % 100; string g = pg.first(num / 1000) + "Thousand " + pg.first(h/ 100) + pg.third(k) + pg.second(k / 10) + pg.first(k % 10); Console.WriteLine("The number is " + g); } Console.ReadLine(); } public string first(int num) { string name; if (num == 0) { name = " "; } else { string[] arr1 = new string[] { "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine" , "Ten", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen"}; name = arr1[num - 1]; } return name; } public string second(int num) { string name; if ((num == 0)||(num==1)) { name = " "; } else { string[] arr1 = new string[] { "Twenty", "Thirty", "Forty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety" }; name = arr1[num - 2]; } return name; } public string third(int num) { string name ; if (num == 0) { name = ""; } else { string[] arr1 = new string[] { "Hundred" }; name = arr1[0]; } return name; } } }
这工作正常从1至19999将完成后不久更新
接受的答案似乎并不完美。 它不像二十一号那样处理破折号，它不会把“and”这个单词放在“一百一十”这样的数字上，而且是recursion的。
这是我的答案。 它智能地添加“和”字，适当地连字号。 让我知道是否需要修改。
这里是如何调用它（显然你会想把它放在一个类的地方）：
for (int i = int.MinValue+1; i < int.MaxValue; i++) { Console.WriteLine(ToWords(i)); }
这里是代码：
private static readonly string[] Ones = {"", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"}; private static readonly string[] Teens = { "Ten", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen" }; private static readonly string[] Tens = { "", "", "Twenty", "Thirty", "Forty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety" }; public static string ToWords(int number) { if (number == 0) return "Zero"; var wordsList = new List<string>(); if (number < 0) { wordsList.Add("Negative"); number = Math.Abs(number); } if (number >= 1000000000 && number <= int.MaxValue) //billions { int billionsValue = number / 1000000000; GetValuesUnder1000(billionsValue, wordsList); wordsList.Add("Billion"); number -= billionsValue * 1000000000; if (number > 0 && number < 10) wordsList.Add("and"); } if (number >= 1000000 && number < 1000000000) //millions { int millionsValue = number / 1000000; GetValuesUnder1000(millionsValue, wordsList); wordsList.Add("Million"); number -= millionsValue * 1000000; if (number > 0 && number < 10) wordsList.Add("and"); } if (number >= 1000 && number < 1000000) //thousands { int thousandsValue = number/1000; GetValuesUnder1000(thousandsValue, wordsList); wordsList.Add("Thousand"); number -= thousandsValue * 1000; if (number > 0 && number < 10) wordsList.Add("and"); } GetValuesUnder1000(number, wordsList); return string.Join(" ", wordsList); } private static void GetValuesUnder1000(int number, List<string> wordsList) { while (number != 0) { if (number < 10) { wordsList.Add(Ones[number]); number -= number; } else if (number < 20) { wordsList.Add(Teens[number - 10]); number -= number; } else if (number < 100) { int tensValue = ((int) (number/10))*10; int onesValue = number - tensValue; if (onesValue == 0) { wordsList.Add(Tens[tensValue/10]); } else { wordsList.Add(Tens[tensValue/10] + "-" + Ones[onesValue]); } number -= tensValue; number -= onesValue; } else if (number < 1000) { int hundredsValue = ((int) (number/100))*100; wordsList.Add(Ones[hundredsValue/100]); wordsList.Add("Hundred"); number -= hundredsValue; if (number > 0) wordsList.Add("and"); } } }
这是一个C＃控制台应用程序 ，将返回整数和小数。
只要得到该string，并像转换一样
string s = txtNumber.Text.Tostring(); int i = Convert.ToInt32(s.Tostring());
它只会写满整数值
尼克·马森对同样问题的孟加拉语数字的解答。 数字的input是Unicodestring。 干杯！！
string number = "২২৮৯"; number = number.Replace("০", "0").Replace("১", "1").Replace("২", "2").Replace("৩", "3").Replace("৪", "4").Replace("৫", "5").Replace("৬", "6").Replace("৭", "7").Replace("৮", "8").Replace("৯", "9"); double vtempdbl = Convert.ToDouble(number); string amount = AmountInWords(vtempdbl); private static string AmountInWords(double amount) { var n = (int)amount; if (n == 0) return " "; else if (n > 0 && n <= 99) { var arr = new string[] { "এক", "দুই", "তিন", "চার", "পাঁচ", "ছয়", "সাত", "আট", "নয়", "দশ", "এগার", "বারো", "তের", "চৌদ্দ", "পনের", "ষোল", "সতের", "আঠার", "ঊনিশ", "বিশ", "একুশ", "বাইস", "তেইশ", "চব্বিশ", "পঁচিশ", "ছাব্বিশ", "সাতাশ", "আঠাশ", "ঊনত্রিশ", "ত্রিশ", "একত্রিস", "বত্রিশ", "তেত্রিশ", "চৌত্রিশ", "পঁয়ত্রিশ", "ছত্রিশ", "সাঁইত্রিশ", "আটত্রিশ", "ঊনচল্লিশ", "চল্লিশ", "একচল্লিশ", "বিয়াল্লিশ", "তেতাল্লিশ", "চুয়াল্লিশ", "পয়তাল্লিশ", "ছিচল্লিশ", "সাতচল্লিশ", "আতচল্লিশ", "উনপঞ্চাশ", "পঞ্চাশ", "একান্ন", "বায়ান্ন", "তিপ্পান্ন", "চুয়ান্ন", "পঞ্চান্ন", "ছাপ্পান্ন", "সাতান্ন", "আটান্ন", "উনষাট", "ষাট", "একষট্টি", "বাষট্টি", "তেষট্টি", "চৌষট্টি", "পয়ষট্টি", "ছিষট্টি", " সাতষট্টি", "আটষট্টি", "ঊনসত্তর ", "সত্তর", "একাত্তর ", "বাহাত্তর", "তেহাত্তর", "চুয়াত্তর", "পঁচাত্তর", "ছিয়াত্তর", "সাতাত্তর", "আটাত্তর", "ঊনাশি", "আশি", "একাশি", "বিরাশি", "তিরাশি", "চুরাশি", "পঁচাশি", "ছিয়াশি", "সাতাশি", "আটাশি", "উননব্বই", "নব্বই", "একানব্বই", "বিরানব্বই", "তিরানব্বই", "চুরানব্বই", "পঁচানব্বই ", "ছিয়ানব্বই ", "সাতানব্বই", "আটানব্বই", "নিরানব্বই" }; return arr[n - 1] + " "; } else if (n >= 100 && n <= 199) { return AmountInWords(n / 100) + "এক শত " + AmountInWords(n % 100); } else if (n >= 100 && n <= 999) { return AmountInWords(n / 100) + "শত " + AmountInWords(n % 100); } else if (n >= 1000 && n <= 1999) { return "এক হাজার " + AmountInWords(n % 1000); } else if (n >= 1000 && n <= 99999) { return AmountInWords(n / 1000) + "হাজার " + AmountInWords(n % 1000); } else if (n >= 100000 && n <= 199999) { return "এক লাখ " + AmountInWords(n % 100000); } else if (n >= 100000 && n <= 9999999) { return AmountInWords(n / 100000) + "লাখ " + AmountInWords(n % 100000); } else if (n >= 10000000 && n <= 19999999) { return "এক কোটি " + AmountInWords(n % 10000000); } else { return AmountInWords(n / 10000000) + "কোটি " + AmountInWords(n % 10000000); } }
以下C＃控制台应用程序代码将接受最多2位小数的货币值，并以英文打印。 这不仅将整数转换为英文等值，而且以美元和美分作为货币值。
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})?")) } } }
只为土耳其代表类的HumanFriendlyInteger （↑）（Türkçe，sayıyazıkarşılığı）：
public static class HumanFriendlyInteger { static string[] ones = new string[] { "", "Bir", "İki", "Üç", "Dört", "Beş", "Altı", "Yedi", "Sekiz", "Dokuz" }; static string[] teens = new string[] { "On", "On Bir", "On İki", "On Üç", "On Dört", "On Beş", "On Altı", "On Yedi", "On Sekiz", "On Dokuz" }; static string[] tens = new string[] { "Yirmi", "Otuz", "Kırk", "Elli", "Altmış", "Yetmiş", "Seksen", "Doksan" }; static string[] thousandsGroups = { "", " Bin", " Milyon", " Milyar" }; private static string FriendlyInteger(int n, string leftDigits, int thousands) { if (n == 0) { return leftDigits; } string friendlyInt = leftDigits; if (friendlyInt.Length > 0) { friendlyInt += " "; } if (n < 10) friendlyInt += ones[n]; else if (n < 20) friendlyInt += teens[n - 10]; else if (n < 100) friendlyInt += FriendlyInteger(n % 10, tens[n / 10 - 2], 0); else if (n < 1000) friendlyInt += FriendlyInteger(n % 100, ((n / 100 == 1 ? "" : ones[n / 100] + " ") + "Yüz"), 0); // Yüz 1 ile başlangıçta "Bir" kelimesini Türkçe'de almaz. else friendlyInt += FriendlyInteger(n % 1000, FriendlyInteger(n / 1000, "", thousands + 1), 0); return friendlyInt + thousandsGroups[thousands]; } public static string IntegerToWritten(int n) { if (n == 0) return "Sıfır"; else if (n < 0) return "Eksi " + IntegerToWritten(-n); return FriendlyInteger(n, "", 0); }
