Java中的英语单词 [英] Int to English words in Java

问题描述

在这里，我要问一些奇怪的事情。

Here I am to ask something weird.

我想问一下，是否有任何方法/逻辑可以将整数值转换为字符串值包含数字的英文单词？

I would like to ask that is there any method/logic by which we can convert an integer value to a string value containing the English words for the number?

例如，用户输入22并获得输出二十二或二。

E.g user inputs 22 and gets the output twenty two or two.

谢谢

推荐答案

查看这个代码，它可能就是你要找的东西。例如，如果我们有主要方法，那么：

Check out this code, it might be what you're looking for. For example, inside the main method if we had:

System.out.println(convert(22));

输出：

twenty two

---

编辑 我已经复制了以下代码，稍微清理了格式（主要方法位于底部）：

---

EDIT I've reproduced the code below, cleaning up the formatting a bit (main-method is at the bottom):

import java.text.DecimalFormat;

public class EnglishNumberToWords {

    private static final String[] tensNames = { "", " ten", " twenty",
            " thirty", " forty", " fifty", " sixty", " seventy", " eighty",
            " ninety" };

    private static final String[] numNames = { "", " one", " two", " three",
            " four", " five", " six", " seven", " eight", " nine", " ten",
            " eleven", " twelve", " thirteen", " fourteen", " fifteen",
            " sixteen", " seventeen", " eighteen", " nineteen" };

    private static String convertLessThanOneThousand(int number) {
        String soFar;

        if (number % 100 < 20) {
            soFar = numNames[number % 100];
            number /= 100;
        } else {
            soFar = numNames[number % 10];
            number /= 10;

            soFar = tensNames[number % 10] + soFar;
            number /= 10;
        }
        if (number == 0)
            return soFar;
        return numNames[number] + " hundred" + soFar;
    }

    public static String convert(long number) {
        // 0 to 999 999 999 999
        if (number == 0) {
            return "zero";
        }

        String snumber = Long.toString(number);

        // pad with "0"
        String mask = "000000000000";
        DecimalFormat df = new DecimalFormat(mask);
        snumber = df.format(number);

        // XXXnnnnnnnnn
        int billions = Integer.parseInt(snumber.substring(0, 3));
        // nnnXXXnnnnnn
        int millions = Integer.parseInt(snumber.substring(3, 6));
        // nnnnnnXXXnnn
        int hundredThousands = Integer.parseInt(snumber.substring(6, 9));
        // nnnnnnnnnXXX
        int thousands = Integer.parseInt(snumber.substring(9, 12));

        String tradBillions;
        switch (billions) {
        case 0:
            tradBillions = "";
            break;
        case 1:
            tradBillions = convertLessThanOneThousand(billions) + " billion ";
            break;
        default:
            tradBillions = convertLessThanOneThousand(billions) + " billion ";
        }
        String result = tradBillions;

        String tradMillions;
        switch (millions) {
        case 0:
            tradMillions = "";
            break;
        case 1:
            tradMillions = convertLessThanOneThousand(millions) + " million ";
            break;
        default:
            tradMillions = convertLessThanOneThousand(millions) + " million ";
        }
        result = result + tradMillions;

        String tradHundredThousands;
        switch (hundredThousands) {
        case 0:
            tradHundredThousands = "";
            break;
        case 1:
            tradHundredThousands = "one thousand ";
            break;
        default:
            tradHundredThousands = convertLessThanOneThousand(hundredThousands)
                    + " thousand ";
        }
        result = result + tradHundredThousands;

        String tradThousand;
        tradThousand = convertLessThanOneThousand(thousands);
        result = result + tradThousand;

        // remove extra spaces!
        return result.replaceAll("^\\s+", "").replaceAll("\\b\\s{2,}\\b", " ");
    }

    public static void main(String[] args) {
        System.out.println(convert(22));  // "twenty two"
    }
}

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