數值轉中文大寫

ZhBigNum.java

import java.util.regex.Pattern;

/**
 * @author Kent Yeh
 */
public class ZhBigNum {

    public static final Pattern ZEROP = Pattern.compile("\\x{96F6}{2,}");

    public static void main(String[] args) {
        System.out.println(toZhBigNum("1002000304050"));
        System.out.println(toZhBigNum("305000"));
        System.out.println(toZhBigNum("100020003000"));
    }

    public static String toZhBigNum(String value) {
        char[] bd = new char[]{'零', '壹', '貳', '參', '肆', '伍', '陸', '柒', '捌', '玖'};
        String[] tail1 = new String[]{"", "拾", "佰", "仟"};
        String[] tail2 = new String[]{"", "萬", "億", "兆"};
        StringBuilder res = new StringBuilder();
        int pos = 0;
        boolean fnz = false;//每4個一組，直到碰到不是0才為true
        for (char c : new StringBuilder(value).reverse().toString().toCharArray()) {
            int d = c;
            int r = pos / 4;
            int m = pos % 4;
            boolean nz = c > 48;
            fnz = m == 0 ? c > 48 : c > 48 || fnz;
            res.append(nz ? tail2[r] : "").append(nz ? tail1[m] : "").append(fnz ? bd[d - 48] : "");
            if (nz) {
                tail2[r] = "";
            }
            pos++;
        }
        return ZEROP.matcher(res.reverse().toString()).replaceAll("零");
    }

    public static String toZhBigNumFast(String value) {
        char[] bd = new char[]{'零', '壹', '貳', '參', '肆', '伍', '陸', '柒', '捌', '玖'};
        String[] tail1 = new String[]{"", "拾", "佰", "仟"};
        String[] tail2 = new String[]{"", "萬", "億", "兆"};
        StringBuilder res = new StringBuilder();
        boolean fnz = false;//每4個一組，直到碰到不是0才為true
        char[] cs = value.toCharArray();
        int len = cs.length;
        for (int i = len - 1; i > -1; i--) {
            int d = cs[i];
            int pos = len - i - 1;
            int r = pos / 4;
            int m = pos % 4;
            boolean nz = d > 48;
            fnz = m == 0 ? d > 48 : d > 48 || fnz;
            res.append(nz ? tail2[r] : "").append(nz ? tail1[m] : "").append(fnz ? bd[d - 48] : "");
            if (nz) {
                tail2[r] = "";
            }
        }
        return ZEROP.matcher(res.reverse().toString()).replaceAll("零");
    }
}

ZhBigNum.js

function reverseString(str) {
    return str.split('').reverse().join('');
}

function toZhBigNum(snum){
  if(!snum||snum===0||snum==='零')
      return '零';
  snum = ''+snum;
  let bd = ['零', '壹', '貳', '參', '肆', '伍', '陸', '柒', '捌', '玖'];
  let tail1=['', '拾', '佰', '仟'];
  let tail2=['', '萬', '億', '兆'];
  let fnz = false;
  let len = snum.length;
  let res = '';
  for (let i = len - 1; i > -1; i--) {
    let d = snum.charCodeAt(i);
    let pos = len - i - 1;
    let r = Math.floor(pos / 4);
    let m = pos % 4;
    let nz = d > 48;
    fnz = m == 0 ? d > 48 : d > 48 || fnz;
    if(nz)
      res = res + tail2[r] + tail1[m];
    if(fnz){
      res = res + bd[d - 48];
    }
    if(nz)
      tail2[r] = '';
  }
  return reverseString(res).replace(/\u96F6{2,}/g, '零');
}