一个产生中文累计数的代码片断

为了业务的需要无聊之极的写了一个输出中文数字的方法，效率上勉强过得去，如果你有什么更好的方法，跟贴吧。

1

2 /**//// <summary>

3 /// 中文计数

4 /// </summary>

5 /// <param name="num">[1 - 99999]</param>

6 /// <returns></returns>

7 public static string NumToChineseNumStr(int num)

8 {

9 if(num <= 0 || num > 99999)

10 throw new ArgumentException("num");

11 string[] GradeChar = new string[]{"","十","百","千","万"};

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

13 char zero = '零';

14

15 int length = (int) Math.Log10(num) + 1;

16 StringBuilder output = new StringBuilder(length);

17 int[] input = new int[length];

18 int index = -1;

19 while(++index != length)

20 {

21 input[index] = (num / (length - index == 1? 1 : (int)Math.Pow(10, length -index -1))) % 10;

22 }

23

24 bool needFix = false;

25 if(input.Length == 2 && input[0] == 1)

26 needFix = true;

27

28 for(int pos = 0; pos < input.Length; pos ++)

29 {

30 if(input[pos] == 0)

31 {

32 if(output[output.Length -1] != zero)

33 output.Append(zero);

34 continue;

35 }

36 else if(!(pos == 0 && needFix))

37 {

38 output.Append(DigitChar[input[pos] -1]);

39 }

40 output.Append(GradeChar[input.Length - pos -1]);

41 }

42 if(output[output.Length - 1] == zero)

43 output.Remove(output.Length - 1, 1);

44 return output.ToString();

45 }

46