package com.kangdy.test;
/**
 * 數字金額轉化成大寫
 * 先將整數與小數部分分開，計算小數部分，角分并保存
 * 整數部分長度不足12位，前面加0補足。
 * 將整數部分分割3部分。高4位代表億，中間的是萬，其余分別代表千，百，十，個
 * 定一個方法拼出每一部分串。
 * 最后整數與小數部分合成。
 * @author dkang
 *
 */
public class NumberToString {

 String numberStr;

 public static final String unit[] = { "", "十", "百", "千", "萬", "億" };

 public static final String unit2[] = { "元", "角", "分" };

 public static final String numStr[] = { "零", "壹", "貳", "叁", "肆", "伍", "陸",
   "柒", "捌", "玖" };

 /**
  * 字符串長度不足12位用0補足
  *
  * @param str
  * @return
  */
 private String additionalZero(String str) {
  StringBuffer strb = new StringBuffer();
  if (str.length() < 12) {
   int size = 12 - str.length();
   for (int i = 0; i < size; i++) {
    strb.append("0");
   }
  }
  return strb.append(str).toString();
 }

 /**
  * 遞歸拆分數字成字符串
  *
  * @param value
  * @param strBuffer
  * @return
  */
 private String decomposeNumberToString(int value, StringBuffer strBuffer) {
  int quotient = 0;
  quotient = value / 10;
  if (quotient != 0) {
   decomposeNumberToString(quotient, strBuffer);
  }
  int remaider = value % 10;
  strBuffer.append(remaider + ",");
  return strBuffer.toString().substring(0,
    strBuffer.toString().length() - 1);
 }

 /**
  * 使用循環拆分數字成字符串
  *
  * @param value
  * @return
  */
 private String decomposeNumberToString2(int value) {
  StringBuilder strBuilder = new StringBuilder();
  int quotient = value;
  int remaider = 0;
  while (quotient != 0) {
   remaider = quotient % 10;
   strBuilder.append(remaider + ",");
   quotient = quotient / 10;
  }
  strBuilder.deleteCharAt(strBuilder.lastIndexOf(","));
  return strBuilder.reverse().toString();
 }

 /**
  * 添加單位
  *
  * @param temp
  * @return
  */
 private String addUnits(String temp) {
  StringBuffer sb = new StringBuffer();
  String str[] = temp.split(",");
  String tempStr = temp.replace(",", "");
  if (tempStr.contains("000")) {
   return sb.append(resplaceNumToStr(str[0]) + unit[3]).toString();
  } else if (tempStr.contains("00")) {
   if (tempStr.charAt(3) == '0') {
    return sb.append(resplaceNumToStr(str[0]) + unit[3]).append(
      resplaceNumToStr(str[1]) + unit[2]).toString();
   } else {
    return sb.append(resplaceNumToStr(str[0]) + unit[3]).append(
      numStr[0]).append(resplaceNumToStr(str[3])).toString();
   }
  } else {
   for (int i = 0; i < str.length; i++) {
    sb.append(resplaceNumToStr(str[i]));
    if (!str[i].equals("0")) {
     sb.append(unit[str.length - (i + 1)]);
    }
   }
  }
  return sb.toString();
 }

 /**
  * 數字替換
  *
  * @param str
  * @return
  */
 private String resplaceNumToStr(String str) {
  try {
   int num = Integer.parseInt(str);
   return numStr[num];
  } catch (Exception e) {
   e.printStackTrace();
  }
  return "";
 }

 /**
  * 把4位長度的數字轉化成字符串
  *
  * @param number
  * @param i
  * @return
  */
 private String transformNumberToString(String number, int i) {
  StringBuffer strBuffer = new StringBuffer();
  StringBuilder strBuilder = new StringBuilder();
  try {
   int num = Integer.parseInt(number);
   if (num != 0) {
    String s1 = decomposeNumberToString(num, strBuffer);
    strBuilder.append(addUnits(s1));
    if (i == 1) {
     strBuilder.append(unit[5]);
    } else if (i == 2)
     strBuilder.append(unit[4]);
   }
  } catch (Exception e) {
   e.printStackTrace();
  }
  return strBuilder.toString();
 }

 /**
  * 得到最終結果
  *
  * @param str
  * @return
  */
 public String IntegrationResultString(String str) {
  StringBuffer strBuffer = new StringBuffer();
  String numStr[] = null;
  if (str.indexOf(".") != -1) {
   numStr = str.split("\\.");
  } else {
   return strBuffer.append(createIntegerPartsResult(str)).toString();
  }
  String fractionalStr = createFractionalPartsResult(numStr[1]);
  String integerStr = createIntegerPartsResult(numStr[0]);
  return strBuffer.append(integerStr).append(fractionalStr).toString();
 }

 private String createIntegerPartsResult(String integer) {
  StringBuffer strBuffer = new StringBuffer();
  String temp = additionalZero(integer);
  String str1 = temp.substring(0, 4);
  strBuffer.append(transformNumberToString(str1, 1));
  String str2 = temp.substring(4, 8);
  strBuffer.append(transformNumberToString(str2, 2));
  String str3 = temp.substring(8, temp.length());
  strBuffer.append(transformNumberToString(str3, 3) + unit2[0]);
  return strBuffer.toString();
 }

 private String createFractionalPartsResult(String fractionalStr) {
  StringBuilder strB = new StringBuilder();
  String s1 = fractionalStr.substring(0, 1);
  String s2 = fractionalStr.substring(1, fractionalStr.length());
  if (!s1.equals("0")) {
   strB.append(resplaceNumToStr(s1) + unit2[1]);
  }
  if (!s2.equals("0")) {
   strB.append(resplaceNumToStr(s2) + unit2[2]);
  }
  return strB.toString();
 }

 public static void main(String args[]) {
  NumberToString test = new NumberToString();
  String str = "200123004054.11";
  System.out.println(test.IntegrationResultString(str));
 }
}