String x[]={"zero","one","two", "three",four", "five","six",seven","eight","nine"} ; String y[]={ten","eleven","twelve","thirteen","fourteen","fifteen", "sixteen","seventeen","eighteen","nineteen" }; String z[]={"twenty","thirty","fourty","fifty", "sixty","seventy", "eighty","ninety" }; 用Java命令行输入或在Eclipse中设置参数一个小于100的整数，将其翻成英文表示。 例如： 输入32，输出：thirty two 输入14，输出：fourteen 输入8， 输出：eight 反之，输入英文表示，输出相应的整数。

非常抱歉，我刚刚的代码中有一处小错误，应该是“forty”而不是“fourty”，我在下面的代码中进行了更正。请注意使用正确的代码：

public class NumberToEnglish {

    private static final String[] x = {"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"};
    private static final String[] y = {"ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"};
    private static final String[] z = {"twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety"};

    public static void main(String[] args) {
        int n = Integer.parseInt(args[0]);
        String result = "";
        if (n < 10) {
            result = x[n];
        } else if (n < 20) {
            result = y[n - 10];
        } else if (n < 100) {
            int tens = n / 10;
            int ones = n % 10;
            result = z[tens - 2];
            if (ones != 0) {
                result += " " + x[ones];
            }
        }
        System.out.println(result);
    }
}

public class EnglishToNumber {

    private static final String[] x = {"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"};
    private static final String[] y = {"ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"};
    private static final String[] z = {"twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety"};

    public static void main(String[] args) {
        String s = args[0];
        int result = 0;
        for (int i = 0; i < x.length; i++) {
            if (s.equals(x[i])) {
                result = i;
                break;
            }
        }
        for (int i = 0; i < y.length; i++) {
            if (s.equals(y[i])) {
                result = 10 + i;
                break;
            }
        }
        for (int i = 0; i < z.length; i++) {
            if (s.equals(z[i])) {
                result = (i + 2) * 10;
                break;
            }
        }
        System.out.println(result);
    }
}

谢谢您的理解！