Java数字转换成汉字

落日映苍穹つ 2022-11-18 04:57 262阅读 0赞

## Java数字转换成汉字 ##

**处理小于一亿的数字**

<table> 
 <thead> 
  <tr> 
   <th>输入</th> 
   <th>输出</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>10</td> 
   <td>十</td> 
  </tr> 
  <tr> 
   <td>100</td> 
   <td>一百</td> 
  </tr> 
  <tr> 
   <td>9999</td> 
   <td>九千九百九十九</td> 
  </tr> 
 </tbody> 
</table>

public class DigitUtil {
    
        private static final Map<Integer, String> NUMBNER_MAP = new HashMap<>();
    
        static {
            NUMBNER_MAP.put(0, "零");
            NUMBNER_MAP.put(1, "一");
            NUMBNER_MAP.put(2, "二");
            NUMBNER_MAP.put(3, "三");
            NUMBNER_MAP.put(4, "四");
            NUMBNER_MAP.put(5, "五");
            NUMBNER_MAP.put(6, "六");
            NUMBNER_MAP.put(7, "七");
            NUMBNER_MAP.put(8, "八");
            NUMBNER_MAP.put(9, "九");
        }
    
        /**
         * 阿拉伯数字转汉字
         *
         * @param num 目标数字
         * @return
         */
        public static String convertString(int num) {
            if (num == 0) {
                return "零";
            }
            Queue<String> digitQueue = new LinkedList<>();
            digitQueue.add("");
            digitQueue.add("十");
            digitQueue.add("百");
            digitQueue.add("千");
            digitQueue.add("万");
            digitQueue.add("十");
            digitQueue.add("百");
            digitQueue.add("千");
            Queue<Integer> numQueue = new LinkedList<>();
            int temp = num;
            while (temp > 0) {
                int current = temp % 10;
                numQueue.add(current);
                temp /= 10;
            }
            int count = 1;
            Stack<String> resStack = new Stack<>();
            StringBuilder res = new StringBuilder();
            while (!numQueue.isEmpty()) {
                String digit = digitQueue.poll(); // 当前位数
                int front = numQueue.poll(); // 头部数字
                String currentStr = NUMBNER_MAP.get(front);
                if (0 == front) { // 判断零的情况
                    if (!resStack.isEmpty() && !"零".equals(resStack.peek())) {
                        resStack.push(currentStr);
                    }
                } else {
                    if (count == 1) { // 个位数
                        resStack.push(currentStr);
                    } else {
                        resStack.push(digit);
                        resStack.push(currentStr);
                    }
                }
                // 处理一十X的情况
                if (numQueue.isEmpty() && "百".equals(digitQueue.peek()) && "一".equals(resStack.peek())) {
                    resStack.pop();
                }
                // 处理万的情况
                if (count >= 4 && !numQueue.isEmpty()) {
                    // 将数字全部弹出
                    resStack.push(digitQueue.poll());
                    int nextNum = 0;
                    int tempDigit = 1;
                    while (!numQueue.isEmpty()) {
                        nextNum += numQueue.poll() * tempDigit;
                        tempDigit *= 10;
                    }
                    String nextNumStr = convertString(nextNum);
                    res.append(nextNumStr);
                }
                count++;
            }
            while (!resStack.isEmpty()) {
                res.append(resStack.pop());
            }
            return res.toString();
        }
    }