题解 | #人民币转换#

import java.util.*;

// 注意类名必须为 Main, 不要有任何 package xxx 信息 public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); HashMap<Character, String> map = new HashMap<Character, String>(); 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"); String[] dh = new String[9]; dh[0] = "元"; dh[1] = "拾"; dh[2] = "佰"; dh[3] = "仟"; dh[4] = "万";

    dh[5] = "拾";
    dh[6] = "佰";
    dh[7] = "仟";
    dh[8] = "亿";




    // 注意 hasNext 和 hasNextLine 的区别
    while (in.hasNextDouble()) { // 注意 while 处理多个 case
        double num = in.nextDouble();
        String s = "" + num;
        String[] arr = s.split("\\.");
        String res = "";
        //先看.前面
        int j = 0;
        for (int i = arr[0].length() - 1; i >= 0; i--) {
            if (arr[0].charAt(i) == '0') {
                res = map.get('0') + res;
                j++;
            } else {
                res = map.get(arr[0].charAt(i)) + dh[j++] + res;
            }
        }
       
        //一和十只保留10
        for(int i=0; i<res.length(); i++){
            if((""+res.charAt(i)).equals("壹") && i+1<res.length() && (""+res.charAt(i+1)).equals("拾")){
                res = res.substring(0, i) + res.substring(i+1, res.length());
            }
        }

        String fin = "人民币";
        //去掉多个连续零
        for (int i = 0; i < res.length(); i++) {
            if (("" + res.charAt(i)).equals("零")) {
                while (i < res.length() && ("" + res.charAt(i)).equals("零")) {
                    i++;
                }
                if (i != res.length()) {
                    fin = fin + "零";
                    i = i - 1;
                }

            } else {
                fin = fin + res.charAt(i);
            }
       
        }
        String postD[] = new String[2];
        postD[0] = "角";
        postD[1] = "分";

        //看后面
        if(arr[1].charAt(0)=='0' && arr[1].charAt(1)=='0'){
            fin = fin + "整";
        }else{
           for(int i=0; i<arr[1].length(); i++){
               if(arr[1].charAt(i)!='0')
                    fin = fin + map.get(arr[1].charAt(i)) + postD[i];
           } 
        }

        

        System.out.println(fin);
    }
}

}