Gets a word from a number in between 1-999 - Java java.lang

Java examples for java.lang:Math Number

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Description

Gets a word from a number in between 1-999

Demo Code


//package com.java2s;

public class Main {
    /**/*from w ww .  ja  v a2s.c om*/
     * Gets a word from a number in between 1-999
     * @param num
     *   Number to get the word for
     * @return
     *   The number in words with British usage
     */
    public static String numToWords(long num) {
        String[] ones = new String[] { "one", "two", "three", "four",
                "five", "six", "seven", "eight", "nine" };

        int[] onesLen = new int[] { 3, 3, 5, 4, 5, 3, 5, 5, 4 };

        String[] teens = new String[] { "eleven", "twelve", "thirteen",
                "fourteen", "fifteen", "sixteen", "seventeen", "eighteen",
                "nineteen" };

        int[] teensLen = new int[] { 6, 6, 8, 8, 7, 7, 9, 8, 8 };

        String[] tens = new String[] { "ten", "twenty", "thirty", "forty",
                "fifty", "sixty", "seventy", "eighty", "ninety" };

        int[] tensLen = new int[] { 3, 5, 6, 5, 5, 5, 7, 6, 6 };

        String numStr = String.valueOf(num);
        StringBuilder result = new StringBuilder();

        int one = Integer.valueOf(String.valueOf(numStr.charAt(numStr
                .length() - 1)));
        result.insert(0, one > 0 ? ones[one - 1] + " " : "");

        if (num >= 10) {
            int ten = Integer.valueOf(String.valueOf(numStr.charAt(numStr
                    .length() - 2)));

            if (ten > 1) {
                result.insert(0, tens[ten - 1] + " ");
            } else if (ten == 0) {

            } else {
                result = new StringBuilder(one > 0 ? teens[one - 1] : "ten");
            }
        }

        if (num >= 100) {
            int hundred = Integer.valueOf(String.valueOf(numStr
                    .charAt(numStr.length() - 3)));
            int ten = Integer.valueOf(String.valueOf(numStr.charAt(numStr
                    .length() - 2)));
            result.insert(0,
                    ones[hundred - 1]
                            + (one == 0 && ten == 0 ? " hundred "
                                    : " hundred and "));
        }

        return result.toString();
    }
}

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