题解 | #人民币转换#

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Map;

public class Main {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String s = br.readLine();

    String[] strs = s.split("\\.");
    String a = strs[0];
    Map<Character, String> map = new HashMap<>();
    Map<Integer, String> map1 = new HashMap<>();
    map.put('0', "零");
    map.put('1', "壹");
    map.put('2', "贰");
    map.put('3', "叁");
    map.put('4', "肆");
    map.put('5', "伍");
    map.put('6', "陆");
    map.put('7', "柒");
    map.put('8', "捌");
    map.put('9', "玖");
    map1.put(2, "拾");
    map1.put(3, "佰");
    map1.put(4, "仟");
    map1.put(5, "万");
    map1.put(6, "拾");
    map1.put(7, "佰");
    map1.put(8, "仟");
    map1.put(9, "亿");
    //map1.put(6, "拾万");


    int index = 0;
    StringBuilder sb = new StringBuilder();
    if (!a.equals("0")) {
        for (int i = a.length() - 1; i >= 0; i--) {
            index++;
            String s1 = map.get(s.charAt(i));
            if (i != a.length() - 1 && sb.length() > 1 && sb.charAt(0) == '零' && s1.equals("零")) {
                continue;
            }

            if (s1.equals("零")) {
                sb.insert(0, s1);
                continue;
            }
            if (map1.get(index) != null) {
                if (s1.equals("壹") && map1.get(index).equals("拾")) {
                    s1 = "";
                }
                s1 += (map1.get(index));
            }
            sb.insert(0, s1);

        }
        sb.append("元");
    }

    String b = strs[1];
    if (!b.equals("00")) {
        if (b.charAt(0) != '0') {
            sb.append(map.get(b.charAt(0)));
            sb.append("角");
        }
        if (b.charAt(1) != '0') {
            sb.append(map.get(b.charAt(1)));
            sb.append("分");
        }
    } else {
        sb.append("整");
    }
    sb.insert(0, "人民币");
    System.out.println(sb.toString());
}

}