[英]How to get each number between words in string as separate value to replace
首先,我要說的不是要問如何將整數值轉換為字符串短語。
我的問題是,如何使字符串中的單詞之間的每個數字作為單獨的值分別替換為46,000,000(四千六百萬)和70,000,000(七千萬)。 為了使它更容易而不混淆,例如,如果字符串值已經存在:
string val1 = "replace1";
string val2 = "replace2";
和輸入字符串:
string inputStr = "distance from the Sun ranging from 46 000 000 to 70 000 000 km";
得到這個結果:
距太陽的距離,范圍從replace1到replace2 km
我不是在問如何將值替換為其他值,我的問題是如何從字符串中提取存在的數字作為單獨的值來替換它。
string foundNum1 = "46 000 000";
string foundNum2 = "70 000 000";
只有這樣我才能使用替換方法:
string f1 = inputStr.Replace(foundNum1, val1);
string outStr = f1.Replace(foundNum2, val2);
這是您需要轉換的任何數字的完整答案:
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;
}
public string ConvertStringNumbersToWrittenForm(string inputStr)
{
var regex = new Regex(@"[\d][\d ]+[\d]");
var matches = regex.Matches(inputStr);
string newString = inputStr;
foreach (var match in matches)
{
string matchStr = match.ToString();
//eliminate spaces
matchStr = matchStr.Replace(" ", string.Empty);
newString = newString.Replace(match.ToString(), NumberToWords(Convert.ToInt32(matchStr)));
}
return newString;
}
要使用它,請致電:
string wordString = ConvertStringNumbersToWrittenForm("distance from the Sun ranging from 46 000 000 to 70 000 000 km");
而wordString將是結果字符串,其中包含數字的文字。
要動態地執行此操作,可以使用如下所示的正則表達式:
string val1 = "replace1";
string val2 = "replace2";
string inputStr = "distance from the Sun ranging from 46 000 000 to 70 000 000 km";
var regex = new Regex(@"[\d][\d ]+[\d]");
var matches = regex.Matches(inputStr);
inputStr.Replace(matches[0], val1);
inputStr.Replace(matches[1], val2);
只需注意以下幾點:
這會讓您找回任何一組數字。
string inputStr = "distance from the Sun ranging from 46 000 000 to 70 000 000 km";
Regex pattern = new Regex(@"([0-9]{1,3}(?:\s[0-9]{3})*)");
foreach (Match match in pattern.Matches(inputStr))
{
Console.WriteLine(match.Groups[1]);
}
這將顯示每個匹配項。 現在,您只需要按照自己的方式進行替換即可。 不確定您在那里計划什么; 這就是為什么我沒有放置任何東西的原因。
您可以執行以下操作:
string res = inputStr.Replace("46 000 000", val1).Replace("70 000 000", val2);
我很確定您是這樣做的:
inputStr = inputStr.Replace(“ 46000000”,“四千六百萬”);
inputStr = inputStr.Replace(“ 700000000”,“七千萬”);
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