using System;
namespace ConsoleApp
{
///
/// 阿拉伯数字到大写中文的转换
/// 未对非法数字进行判别
/// 请调用NumToChn方法
/// site
///
public class NumFormat
{
public NumFormat()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
// 转换数字
private char ToNum(char x)
{
string strChnNames="零一二三四五六七八九";
string strNumNames="0123456789";
return strChnNames[strNumNames.IndexOf(x)];
}
// 转换万以下整数
private string ChangeInt(string x)
{
string[] strArrayLevelNames=new string[4] {"","十","百","千"};
string ret = "";
int i;
for (i=x.Length-1;i>=0;i--)
if (x[i] == '0')
ret = ToNum(x[i]) + ret;
else
ret = ToNum(x[i]) + strArrayLevelNames[x.Length-1-i] + ret;
while ((i=ret.IndexOf("零零"))!=-1)
ret=ret.Remove(i, 1);
if (ret[ret.Length-1]=='零' && ret.Length>1)
ret=ret.Remove(ret.Length-1,1);
if (ret.Length>=2 && ret.Substring(0,2)=="一十")
ret=ret.Remove(0,1);
return ret;
}
// 转换整数
private string ToInt(string x)
{
int len = x.Length;
string ret,temp;
if (len<=4)
ret = ChangeInt(x);
else if (len<=8)
{
ret = ChangeInt(x.Substring(0,len-4)) + "万";
temp = ChangeInt(x.Substring(len-4,4));
if (temp.IndexOf("千")==-1 && temp!="")
ret += "零" + temp;
else
ret += temp;
}
else
{
ret=ChangeInt(x.Substring(0,len-8)) + "亿";
temp=ChangeInt(x.Substring(len-8,4));
if (temp.IndexOf("千")==-1 && temp!="")
ret += "零" + temp;
else
ret += temp;
ret += "万";
temp = ChangeInt(x.Substring(len-4,4));
if (temp.IndexOf("千")==-1 && temp!="")
ret += "零" + temp;
else
ret += temp;
}
int i;
if ((i=ret.IndexOf("零万"))!=-1)
ret = ret.Remove(i+1,1);
while ((i=ret.IndexOf("零零"))!=-1)
ret = ret.Remove(i,1);
if (ret[ret.Length-1]=='零' && ret.Length>1)
ret = ret.Remove(ret.Length-1,1);
return ret;
}
private string ToDecimal(string x)
{
string ret="";
for (int i=0;i
ret += ToNum(x[i]);
return ret;
}
public string NumToChn(string x)
{
if (x.Length==0)
return "";
string ret="";
if (x[0]=='-')
{
ret="负";
x=x.Remove(0,1);
}
if (x[0].ToString()==".")
x="0"+x;
if (x[x.Length-1].ToString()==".")
x=x.Remove(x.Length-1,1);
if (x.IndexOf(".")>-1)
ret += ToInt(x.Substring(0,x.IndexOf(".")))+"点"+ToDecimal(x.Substring(x.IndexOf(".")+1));
else
ret += ToInt(x);
return ret;
}
}
}
