Is there a way to convert number words to Integers?

Question

I need to convert one into 1, two into 2 and so on.

Is there a way to do this with a library or a class or anythi

Answer 1

This is the c# implementation of the code in 1st answer:

public static double ConvertTextToNumber(string text)
{
    string[] units = new string[] {
        "zero", "one", "two", "three", "four", "five", "six", "seven", "eight",
        "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen",
        "sixteen", "seventeen", "eighteen", "nineteen",
    };

    string[] tens = new string[] {"", "", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety"};

    string[] scales = new string[] { "hundred", "thousand", "million", "billion", "trillion" };

    Dictionary numWord = new Dictionary();
    numWord.Add("and", new ScaleIncrementPair(1, 0));
    for (int i = 0; i < units.Length; i++)
    {
        numWord.Add(units[i], new ScaleIncrementPair(1, i));
    }

    for (int i = 1; i < tens.Length; i++)
    {
        numWord.Add(tens[i], new ScaleIncrementPair(1, i * 10));                
    }

    for (int i = 0; i < scales.Length; i++)
    {
        if(i == 0)
            numWord.Add(scales[i], new ScaleIncrementPair(100, 0));
        else
            numWord.Add(scales[i], new ScaleIncrementPair(Math.Pow(10, (i*3)), 0));
    }

    double current = 0;
    double result = 0;

    foreach (var word in text.Split(new char[] { ' ', '-', '—'}))
    {
        ScaleIncrementPair scaleIncrement = numWord[word];
        current = current * scaleIncrement.scale + scaleIncrement.increment;
        if (scaleIncrement.scale > 100)
        {
            result += current;
            current = 0;
        }
    }
    return result + current;
}


public struct ScaleIncrementPair
{
    public double scale;
    public int increment;
    public ScaleIncrementPair(double s, int i)
    {
        scale = s;
        increment = i;
    }
}