今天老师即兴布置了一个作业，将阿拉伯数字金额转化为中文大写金额表示，假设数字上限为小于10亿，可以支持2位小数，如：
100000001——壹亿零壹元整100100011——壹亿零壹拾万零壹拾壹元整00211——贰亿零壹佰万零贰佰壹拾壹元整2422000.21——贰佰肆拾贰万贰千元贰角壹分
拿到题目，想到先拿两个数组来存放数字和单位，把阿拉伯数字都转换为大写数字和单位组合的形式，如：
112000012——壹亿壹仟贰佰零拾零万零仟零佰壹拾贰元整
然后将转换后的字符串进行加工，将"零[拾佰仟]"等变成"零"，考虑"零万"变成"零"还是"万"，这一步是比较麻烦的，要考虑比较多的情况，如：
112000012——壹亿壹仟贰佰零零万零零壹拾贰元整
然后将相邻的"零"去重，如：
112000012——壹亿壹仟贰佰万零壹拾贰元整
以下为具体代码，可能还有一些情况没有考虑到，暂时记录如下。
package com.zzutest;import java.text.DecimalFormat;import java.util.Scanner;import java.util.regex.Matcher;import java.util.regex.Pattern;public class Transfer2 {public static void main(String[] args) {Scanner scan= new Scanner(System.in);while(true) {System.out.println("请输入您想要转化的数字：");String number=scan.next();if(number.equals("0")) {break;};//System.out.println(cov(convert(number)));System.out.println("转换结果为："+convert(number));}}private static final char[] data = new char[]{'零', '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖'};private static final char[] units = new char[]{'分', '角', '元', '拾', '佰', '仟', '万', '拾', '佰', '仟', '亿'};private static String removeCharAt(String str, int i) {return str.substring(0, i)+str.substring(i+1);}// //将相邻的‘零’去重// private static String changeZero(String str) {// str.replace('零', ' ');//String no = str.replaceAll("\\s{1,}", " ");//no.replace(' ', '零');//System.out.println(no);// return no;// }/*** 小数类型* @param str* @return*/private static String cov(String str,String trans) {StringBuffer sb = new StringBuffer(trans);if(Double.parseDouble(str)>100000000) {String wan=str.substring(1, 5);//System.out.println("$$$$$$$$$$$$$$wande is"+wan);int wanValue = Integer.parseInt(wan);if(wanValue>0) {trans = sb.toString().replaceAll("零拾", "零").replaceAll("零佰", "零").replaceAll("零仟", "零").replaceAll("零万", "万").replaceAll("零元", "元").replaceAll("零角", "零").replaceAll("零分", "").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零万", "万");}else if(wanValue==0){trans = sb.toString().replaceAll("零拾", "零").replaceAll("零佰", "零").replaceAll("零仟", "零").replaceAll("零万", "零").replaceAll("零元", "元").replaceAll("零角", "零").replaceAll("零分", "").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零");}}else if(Double.parseDouble(str)>10000 && Double.parseDouble(str)<100000000) {trans = sb.toString().replaceAll("零拾", "零").replaceAll("零佰", "零").replaceAll("零仟", "零").replaceAll("零万", "万").replaceAll("零元", "元").replaceAll("零角", "零").replaceAll("零分", "").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零");}else if(Double.parseDouble(str)<10000 && Double.parseDouble(str)>0) {trans = sb.toString().replaceAll("零拾", "零").replaceAll("零佰", "零").replaceAll("零仟", "零").replaceAll("零元", "元").replaceAll("零角", "零").replaceAll("零分", "").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零");}return new StringBuffer(trans).toString();}/*** 整数类型* @param str* @return*/private static String covZ(String str,String trans) {StringBuffer sb = new StringBuffer(trans);if(Double.parseDouble(str)>100000000) {String wan=str.substring(1, 5);System.out.println("$$$$$$$$$$$$$$wande is"+wan);int wanValue = Integer.parseInt(wan);if(wanValue>0) {trans = sb.toString().replaceAll("零拾", "零").replaceAll("零佰", "零").replaceAll("零仟", "零").replaceAll("零万", "万").replaceAll("零元", "元").replaceAll("元", "元整").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零万", "万");}else if(wanValue==0){trans = sb.toString().replace("零拾", "零").replace("零佰", "零").replace("零仟", "零").replace("零万", "零").replace("零元", "元").replace("元", "元整").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零");//System.out.println("_________爆炸了");}}else if(Double.parseDouble(str)>10000 && Double.parseDouble(str)<100000000) {trans = sb.toString().replaceAll("零拾", "零").replaceAll("零佰", "零").replaceAll("零仟", "零").replaceAll("零万", "万").replaceAll("零元", "元").replaceAll("元", "元整").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零");}else if(Double.parseDouble(str)<10000 && Double.parseDouble(str)>0) {trans = sb.toString().replaceAll("零拾", "零").replaceAll("零佰", "零").replaceAll("零仟", "零").replaceAll("零元", "元").replaceAll("元", "元整").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零").replaceAll("零零", "零");}//StringBuffer sb = new StringBuffer(str);//System.out.println("1"+sb.reverse().toString());//str = sb.reverse().toString().replaceAll("零[拾佰仟]", "零").replaceAll("零+万", "万").replaceAll("零+元", "元").replaceAll("零+", "零");// System.out.println("2"+str);return new StringBuffer(trans).toString();}/*** 现将各个后面统统加上单位 * @param money* @return*/public static String convert(String money) {//判断输入是否包含小数点//包含小数点if(money.contains(".")) {//将字符串转为double类型double moneyT=Double.parseDouble(money);DecimalFormat df = new DecimalFormat(".00");// System.out.println("##############"+df.format(moneyT));//得到标准的小数字符串，即小数点后两位数String moneyC=df.format(moneyT);//小数点的位置int location = moneyC.indexOf(".");//System.out.println("the location is "+location);//除去小数点后//System.out.println("the location which has been conved is "+removeCharAt(moneyC,location));//使用double类型来标识该数字double finalNum=Double.parseDouble(removeCharAt(moneyC,location));//声明定义StringBuffer来存转换后的字符串StringBuffer sbf = new StringBuffer();int unit = 0;//逐位进行大写化，最低位开始依次向上，得到的字符串是倒序的while (finalNum > 1) {//单位sbf.insert(0, units[unit++]);double number = finalNum % 10;sbf.insert(0, data[(int)number]);finalNum /= 10;//System.out.println("**********"+finalNum);}//System.out.println("加上单位以后未经转换的格式为： "+sbf.toString());String judged = cov(money,sbf.toString());//System.out.println("经过格式判断的数字为： " + judged);return judged;}//不包含小数点的输入else {int moneyT=Integer.parseInt(money);//System.out.println("---------------->int类型："+moneyT);StringBuffer sbf = new StringBuffer();int unit = 2;while (moneyT != 0) {sbf.insert(0, units[unit++]);int number = moneyT % 10;sbf.insert(0, data[number]);moneyT /= 10;}//System.out.println("加上单位以后未经转换的格式为： "+sbf.toString());String judged = covZ(money,sbf.toString());//System.out.println("经过格式判断的数字为： " + judged);return judged;}}}
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