不知哪位大侠能够提供一个数字转成英文的算法
e.g. 202,321.17 转换如下：
TWO HUNDRED AND TWO THOUSAND THREE HUNDRED AND TWENTY ONE AND CENTS SEVENTEEN ONLY
e.g. 202,321.17 转换如下：
TWO HUNDRED AND TWO THOUSAND THREE HUNDRED AND TWENTY ONE AND CENTS SEVENTEEN ONLY
using System.Collections.Generic;
using System.Text;namespace ConsoleApplication2
{
class Program
{
static void Main(string[] args)
{
string str= new convertor().numberToEnglish(decimal.Parse("202321.17"));
} class convertor
{
public string numberToEnglish(decimal y)
{
string numberStr = "";
string lStr = "";//小数点左边字符串
string rStr = "";//小数点右边字符串
numberStr = (string)y.ToString();
int dot;//小数点位置
dot = numberStr.IndexOf(".");
if (dot != 0 & dot != -1)//判断有没有小数
{
lStr = numberStr.Substring(0, dot);//取小数点left的字串
if (numberStr.Substring(dot + 1, 2) == "00")
{
rStr = "";
}
else
{
rStr = numberStr.Substring(dot + 1, 2);//取小数点right的字串
}
}
else
{
lStr = numberStr;//没有小数点的情况
}
string lStrRev;
lStrRev = reverseString(lStr);//对左边的字串取反字串
string[] a = new string[5];//定义5个字串变量用来存放解析出的三位一组的字串 switch (lStrRev.Length % 3)
{
case 1:
lStrRev = lStrRev + "00"; break; case 2:
lStrRev = lStrRev + "0"; break; }
string StrInt;//用来存放转换后的整数部分
StrInt = "";
for (int i = 0; i <= lStrRev.Length / 3 - 1; i++)//计算有多少个三位
{
a[i] = reverseString(lStrRev.Substring(3 * i, 3));//截取第1个三位
if (a[i] != "000")//用来避免这种情况“1000000=ONE MILLION THOUSAND ONLY”
{
if (i != 0)
{
StrInt = w3(a[i]) + " " + dw(i.ToString()) + " " + StrInt;//用来加上“THOUSAND OR MILLION OR BILLION”
}
else
{
StrInt = w3(a[i]);//防止i=0时“lm=w3(a(i))+" "+dw(i)+" "+lm”多加两个尾空格
}
}
else
{
StrInt = w3(a[i]) + StrInt;
}
}
string StrDce;//用来存放转换后的小数部分
StrDce = "";
if (dot != 0 & dot != -1 & rStr != "")
{
rStr = "0" + rStr;
StrDce = " AND POINT " + w2(rStr);
}
return StrInt + StrDce;
}
//将字符串反置
private string reverseString(string str)
{
int lenInt = str.Length;
string[] z = new string[str.Length];
for (int i = 0; i < lenInt; i++)
{
z[i] = str.Substring(i, 1);
}
str = "";
for (int i = lenInt - 1; i >= 0; i--)
{
str = str + z[i];
}
return str;
}
private string zr4(string y)
{
string[] z = new string[10];
z[1] = "ONE";
z[2] = "TWO";
z[3] = "THREE";
z[4] = "FOUR";
z[5] = "FIVE";
z[6] = "SIX";
z[7] = "SEVEN";
z[8] = "EIGHT";
z[9] = "NINE";
return z[Int32.Parse(y.Substring(0, 1))];
}
private string zr3(string y)
{
string[] z = new string[10];
z[1] = "ONE";
z[2] = "TWO";
z[3] = "THREE";
z[4] = "FOUR";
z[5] = "FIVE";
z[6] = "SIX";
z[7] = "SEVEN";
z[8] = "EIGHT";
z[9] = "NINE";
return z[Int32.Parse(y.Substring(2, 1))];
}
private string zr2(string y)
{
string[] z = new string[20];
z[10] = "TEN";
z[11] = "ELEVEN";
z[12] = "TWELVE";
z[13] = "THIRTEEN";
z[14] = "FOURTEEN";
z[15] = "FIFTEEN";
z[16] = "SIXTEEN";
z[17] = "SEVENTEEN";
z[18] = "EIGHTEEN";
z[19] = "NINETEEN";
return z[Int32.Parse(y.Substring(1, 2))];
}
private string zr1(string y)
{
string[] z = new string[10];
z[1] = "TEN";
z[2] = "TWENTY";
z[3] = "THIRTY";
z[4] = "FORTY";
z[5] = "FIFTY";
z[6] = "SIXTY";
z[7] = "SEVENTY";
z[8] = "EIGHTY";
z[9] = "NINETY";
return z[Int32.Parse(y.Substring(1, 1))];
}
private string dw(string y)
{
string[] z = new string[5];
z[0] = "";
z[1] = "THOUSAND";
z[2] = "MILLION";
z[3] = "BILLION";
return z[Int32.Parse(y)];
}
//用来制作2位数字转英文
private string w2(string y)
{
string tempstr;
if (y.Substring(1, 1) == "0")//判断是否小于十
tempstr = zr3(y);
else
if (y.Substring(1, 1) == "1")//判断是否在十到二十之间
tempstr = zr2(y);
else
{
if (y.Substring(2, 1) == "0")//判断是否为大于二十小于一百的能被十整除的数（为了去掉尾空格）
{
tempstr = zr1(y);
}
else
{
tempstr = zr1(y) + " " + zr3(y);
}
}
return tempstr;
}
private string w3(string y)
{
string tempstr;
if (y.Substring(0, 1) == "0")//判断是否小于一百
tempstr = w2(y);
else
{
if (y.Substring(1, 2) == "00")//判断是否能被一百整除
{
tempstr = zr4(y) + " " + "HUNDRED";
}
else
{
tempstr = zr4(y) + " " + "HUNDRED" + " " + "AND" + " " + w2(y);//不能整除的要后面加“AND”
}
}
return tempstr;
}
}
}
}