datetochinese.java

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// Fig. 3.02_02_01: DateToChinese.java
// 分离阿拉伯数字，并返回相应的中文大写日期

public class DateToChinese
{

  private String[] chineseNumber =
  {
    "零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖", "拾"
  };

  public DateToChinese()
  {
    super();
  }

  public String getDayNumber(int day)
  {
    String output = "";
    if (day < 20)
    {
      output += getMonthNumber(day);
    }
    else if (day >= 20 && day < 30)
    {
      output += "贰拾";
      day -= 20;
      if (day == 0)
      {
        return "贰拾";
      }
      output += getCapitalNumber(day);
    }
    else
    {
      output += "叁拾";
      day -= 30;
      if (day == 0)
      {
        return "叁拾";
      }
      output += getCapitalNumber(day);
    }

    return output;
  }

  public String getMonthNumber(int month)
  {
    String output = "";
    if (month > 10)
    {
      output += "拾";
      month -= 10;
    }
    output += getCapitalNumber(month);
    return output;
  }

  // 分离阿拉伯数字，并返回相应的中文大写数字
  public String getCapitalNumber(int number)
  {
    int divisor = 1, digit;
    String output = "";

    //找到"最大的基数"
    for (int i = 1; i < number; i *= 10)
    {
      divisor = i;
    }

    while (divisor >= 1)
    {
      digit = quotient(number, divisor);

      output += chineseNumber[digit];

      number = remainder(number, divisor);
      divisor = quotient(divisor, 10);
    }

    return output;
  } //分离数字结束

  public int quotient(int a, int b)
  {
    return a / b;
  }

  public int remainder(int a, int b)
  {
    return a % b;
  }

} // end DateToChinese class

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