数字转化为中文念法

奇奇爱说话中，语音识别需要回答玩家的数学问题，所以需要把计算后的答案转化为中文念法。

using UnityEngine;

using System.Collections;

using System.Text.RegularExpressions;

 

public static class IntExtension

{

    private static string ToChineseWithinTenThousand(this int value)

    {

        if (value == 0)

            return "零";

 

        if (value < 0 || value >= 10000)

            return "";

 

        string result = "";

 

        string[] numbers = new string[] { "零", "一", "二", "三", "四", "五", "六", "七", "八", "九" };

 

        string[] units = new string[] { "", "十", "百", "千" };

 

        int cursor = 0;

 

        while (value > 0)

        {

            int remainder = value % 10;

 

            if(remainder != 0)

                result = numbers[remainder] + units[cursor] + result;

            else

                result = numbers[remainder] + result;

 

            cursor += 1;

 

            value /= 10;

        }

 

        result = Regex.Replace(result, "零*零", "零");

        result = Regex.Replace(result, "零$", "");

        result = Regex.Replace(result, "^一十", "十");

 

        return result;

    }

 

    public static string ToChinese(this int value)

    {

        if (value == 0)

            return "零";

 

        bool negative = value < 0;

        if (negative)

            value = -value;

 

        string result = "";

 

        string[] units = new string[] { "", "万", "亿" };

 

        int cursor = 0;

 

        while (value > 0)

        {

            int remainder = value % 10000;

 

            if (remainder != 0)

            {

                result = ToChineseWithinTenThousand(remainder) + units[cursor] + result;

                if (remainder < 1000 && remainder != value)

                    result = "零" + result;

            }

 

            cursor += 1;

 

            value /= 10000;

        }

 

        if (negative)

            result = "负" + result;

 

        return result;

    }

}