I read about an intresting problem yesterday: how to convert an arabic to Chinese number? It looks simple but actually very complicated and it dose cost me several hours to solve. Code is not commented (because i'm tired),just have fun~
Convert_to_Chinese
1 import java.util.*;
2 import java.lang.*;
3 public class Chinese
4 {
5 static private String[] Num = new String [] {"零","壹","贰","叁","肆","伍","陆","柒","捌","玖"};
6 static private String[] Unit = new String [] {"分","角","圆","","拾","佰","仟","萬","億","整"};
7
8 // String toChinese4(){};
9
10
11 static String fraction2Chinese(double fraction)
12 {
13 String s = "";
14
15 double f = ((int)(fraction*100))/100.0;
16
17
18 if( f >=1 || f<0 )
19 return s;
20 else
21 {
22 if(f == 0)
23 s+=Unit[9];
24 else
25 { f *= 100;
26 int b = (int)f/10;
27 s += Num[b];
28 if ( b != 0 )
29 {
30 s+=Unit[1];
31 }
32
33 b= (int)f%10;
34
35 if ( b != 0 )
36 {
37 s+=Num[b];
38 s+=Unit[0];
39 }
40 }
41 }
42 return s;
43 }
44
45 static String thousands2Chinese (int thousands , boolean head , String tail)
46 {
47 String s = "";
48 int[] integer = new int[4];
49 for ( int i = 3 ; i >=0 ; i-- )
50 {
51 integer[i] = thousands%10;
52 thousands/=10;
53 }
54 int zerocount=0;
55 boolean zeroprint;
56
57 if(!head)
58 zeroprint = true;
59 else
60 zeroprint = false;
61 for ( int i = 0 ; i < 4 ; i ++ )
62 {
63 if( integer[ i ] == 0)
64 zerocount ++;
65 else
66 {
67 if( zerocount != 0 )
68 {
69 if (zeroprint)
70 {
71 s+=Num[0];
72 }
73 zerocount = 0;
74 }
75
76 s+=Num[integer[i]];
77 s+=Unit[6-i];
78 zeroprint = true;
79 }
80 }
81
82 if(zerocount<4)
83 s+=tail;
84
85 return s;
86
87 }
88
89 static String num2Chinese(double number)
90 {
91 String s = "";
92 double num = number/100000000;
93 boolean head = true;
94 if( num!= 0 )
95 {
96 s+=thousands2Chinese( (int)num , head ,Unit[8]);
97
98 head = false;
99 // System.out.println(num);
100 }
101
102 num = number / 10000;
103 if( num!= 0 )
104 {
105 s+=thousands2Chinese( (int)num , head ,Unit[7]);
106
107 head = false;
108 // System.out.println(num);
109 }
110
111 num = ((long)number)%10000;
112
113 if( num!= 0 )
114 {
115 s+=thousands2Chinese( (int)num , head ,"");
116 s+=Unit[2];
117 head = false;
118 System.out.println(num);
119 }
120
121 double frac = number-(long)number;
122 //System.out.println(frac);
123 s+=fraction2Chinese(frac);
124 return s;
125 }
126 public static void main(String[] args)
127 {
128 System.out.println(num2Chinese(99901000000.00));
129 }
130 }
131