Question

我有一个C＃方法，将整数转换为英文单词对应的;但是，我如何实现这一点，以便它可以使用字符串。

例如，如果我有以下字符串：

有一只狗。狗吃了1000块骨头。吃完之后，他非常困倦。他睡了12个小时。

我希望它解析它并返回：

有一只狗。狗吃了一千块骨头。吃完之后，他非常困倦。他睡了十二个小时。

如何从句子中取出数字并使用转换方法（如下）？

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;
}

我试过像这样做一个foreach，但它没有工作......

var matches = Regex.Matches(myString, "[0-9]+");
foreach(var match in matches)
{
   NumberToWords(match);
}

Answer 1

您可以使用Split和LINQ：

var input = "There was a dog. The dog ate 1000 bones. After eating, he was very sleepy. He slept for 12 hours.";

var invalidChars = new [] { ',', ';', '-', '.' };
var words = input.Split(' ')
            .Select(x =>
            {
                if (x.All(char.IsDigit) || x.Trim(invalidChars).All(char.IsDigit))
                    return NumberToWords(int.Parse(x.Trim(invalidChars)));
                return x;
            });

var output = string.Join(" ", words);

顺便说一下，我认为NumberToWord方法工作正常。

Answer 2

您可以使用Selman22的方法，但如果您没有使用带有LINQ的.NET版本，您可以使用RegularExpression替换功能而不是匹配。

http://msdn.microsoft.com/en-us/library/cft8645c(v=vs.110).aspx

你只需要一个MatchEvaluator委托：

static string matchEvaluator(Match m)
{
  return NumberToWords(int.Parse(m.ToString()));
}

Answer 3

更简单的方法是使用Regex.Replace方法{/ 3}}。

string input = "There was a dog. The dog ate 1000 bones. After eating, he was very sleepy. He slept for 12 hours.";
string output = Regex.Replace(input, @"\d+", m => NumberToWords(int.Parse(m.Value)));

Answer 4

对现有代码的最小更改：

string s = "There was a dog. The dog ate 1000 bones. After eating, he was very sleepy. He slept for 12 hours.";

foreach (var match in Regex.Matches(s, "[0-9]+"))
{
    string number = match.ToString();
    s = s.Replace(number, NumberToWords(int.Parse(number)));
}

Console.WriteLine(s);

将字符串中的数字转换为英文单词格式

4 个答案: