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代碼

/*** @Author: hweiyu* @Description: TODO* @Date: 2025/5/23 11:33*/
import java.math.BigDecimal;
import java.util.Scanner;public class AmountToChinese {// 中文數字字符private static final String[] NUMBERS = {"零", "壹", "貳", "叁", "肆", "伍", "陸", "柒", "捌", "玖"};// 單位private static final String[] UNITS = {"", "拾", "佰", "仟", "萬", "拾", "佰", "仟", "億", "拾", "佰", "仟"};// 小數部分單位private static final String[] DECIMAL_UNITS = {"角", "分"};public static void main(String[] args) {Scanner scanner = new Scanner(System.in);System.out.print("請輸入金額（支持兩位小數）：");String amountStr = scanner.nextLine();scanner.close();try {String chineseAmount = convertToChinese(amountStr);System.out.println("中文大寫：" + chineseAmount);} catch (IllegalArgumentException e) {System.out.println("輸入錯誤：" + e.getMessage());}}public static String convertToChinese(String amountStr) {// 檢查輸入是否為空if (amountStr == null || amountStr.trim().isEmpty()) {throw new IllegalArgumentException("金額不能為空");}// 移除所有空格amountStr = amountStr.trim().replaceAll("\\s+", "");// 驗證金額格式if (!amountStr.matches("^\\d+(\\.\\d{1,2})?$")) {throw new IllegalArgumentException("金額格式不正確，最多支持兩位小數");}// 處理零元的情況if (amountStr.equals("0") || amountStr.equals("0.0") || amountStr.equals("0.00")) {return "零元整";}// 分割整數和小數部分String[] parts = amountStr.split("\\.");String integerPart = parts[0];String decimalPart = parts.length > 1 ? parts[1] : "";// 處理小數部分（補齊兩位）if (decimalPart.length() == 1) {decimalPart += "0";} else if (decimalPart.length() > 2) {decimalPart = decimalPart.substring(0, 2);}StringBuilder result = new StringBuilder();// 處理整數部分if (!integerPart.equals("0")) {result.append(convertIntegerPart(integerPart));result.append("元");}// 處理小數部分if (!decimalPart.isEmpty() && !decimalPart.equals("00")) {result.append(convertDecimalPart(decimalPart));} else {result.append("整");}return result.toString();}private static String convertIntegerPart(String integerPart) {StringBuilder result = new StringBuilder();int length = integerPart.length();for (int i = 0; i < length; i++) {int digit = integerPart.charAt(i) - '0';int position = length - i - 1;// 處理零的情況if (digit == 0) {// 當前位為零，且下一位不為零，添加"零"if (i < length - 1 && integerPart.charAt(i + 1) != '0' &&!result.toString().endsWith("零")) {result.append("零");}// 處理萬億、億、萬的單位if (position % 4 == 0) {result.append(UNITS[position]);}} else {result.append(NUMBERS[digit]);result.append(UNITS[position]);}}// 處理特殊情況，如"壹拾"簡化為"拾"String resultStr = result.toString();if (resultStr.startsWith("壹拾") && resultStr.length() > 2) {resultStr = resultStr.substring(1);}return resultStr;}private static String convertDecimalPart(String decimalPart) {StringBuilder result = new StringBuilder();int jiao = decimalPart.charAt(0) - '0';int fen = decimalPart.charAt(1) - '0';if (jiao != 0) {result.append(NUMBERS[jiao]).append(DECIMAL_UNITS[0]);}if (fen != 0) {// 如果角為零，分不為零，需要添加"零"if (jiao == 0) {result.append("零");}result.append(NUMBERS[fen]).append(DECIMAL_UNITS[1]);}return result.toString();}
}