Java Number Convert numToWords(long num)

Description

Gets a word from a number in between 1-999

License

Open Source License

Parameter

Parameter	Description
num	Number to get the word for

Return

The number in words with British usage

Declaration

public static String numToWords(long num) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

public class Main {
    /**//from  www.j  a  va  2s .c  o  m
     * 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();
    }
}

Related

1. numToInt(Number n)
2. numToIPv4(StringBuilder host)
3. numToLetter(String input)
4. numToPowerOf(int num, int toPowerOf)
5. numToStringWithOrder(long count)
6. parseAmountConversionRate(String convRate)