JAVA 中文数字转阿拉伯数字

最新推荐文章于 2023-08-01 10:36:20 发布

原创最新推荐文章于 2023-08-01 10:36:20 发布 · 459 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#java

本文介绍了一种将中文数字字符转换为阿拉伯数字的Java程序，通过正则表达式和字符数组实现，适合处理中文数字计数和单位转换。重点讲解了如何处理'两'和多位数的处理方法。



import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 *<p>中文数字转阿拉伯数字/p>
 */
public class CN2Num {
   static char[] cnArr = new char [] {'一','二','三','四','五','六','七','八','九', '两'};
   static char[] chArr = new char [] {'十','百','千','万','亿'};
   static String allChineseNum = "零一二三四五六七八九十百千万亿0123456789两";

   public static int cn2Num(String chineseNum) {
        int result = 0;
        int temp = 1;
        int count = 0;
        for (int i = 0; i < chineseNum.length(); i++) {
            boolean b = true;
            char c = chineseNum.charAt(i);
            for (int j = 0; j < cnArr.length; j++) {
                if (c == cnArr[j]) {
                    if(0 != count){
                        result += temp;
                        temp = 1;
                        count = 0;
                    }
                    // 下标+1，就是对应的值
                   if (c == '两') {
                      temp = 2;
                   } else {
                      temp = j + 1;
                   }
                    b = false;
                    break;
                }
            }
            if(b){
                for (int j = 0; j < chArr.length; j++) {
                    if (c == chArr[j]) {
                        switch (j) {
                        case 0:
                            temp *= 10;
                            break;
                        case 1:
                            temp *= 100;
                            break;
                        case 2:
                            temp *= 1000;
                            break;
                        case 3:
                            temp *= 10000;
                            break;
                        case 4:
                            temp *= 100000000;
                            break;
                        default:
                            break;
                        }
                        count++;
                    }
                }
            }
            if (i == chineseNum.length() - 1) {
                result += temp;
            }
        }
        return result;
   }

   public static boolean isChineseNum(String chineseStr) {
      char [] ch = chineseStr.toCharArray();
      for (char c : ch) {
         if (!allChineseNum.contains(String.valueOf(c))) {
            return false;
         }
      }
      return true;
   }

   public static boolean isNum(String str) {
      String reg = "[0-9\\.]+";
      return str.matches(reg);
   }

   public static String extractNum(String str) {
        String reg = "[0-9\\.]+";
        Pattern pattern = Pattern.compile(reg);
        Matcher matcher = pattern.matcher(str);
        if (matcher.find()) {
            return matcher.group();
        }
        return null;
    }

    public static String extractUnit(String str) {
        String reg = "十|百|千|万|亿";
        Pattern pattern = Pattern.compile(reg);
        Matcher matcher = pattern.matcher(str);
        if (matcher.find()) {
            return matcher.group();
        }
        return null;
    }
}