public static void main(String args[]){
        NumberToWord ntw = new NumberToWord();
        System.out.println(ntw.numberToWords(8000));
        System.out.println(ntw.numberToWords(8192));
        System.out.println(ntw.numberToWords(8112));
        System.out.println(ntw.numberToWords(504));
        System.out.println(ntw.numberToWords(565100));
        System.out.println(ntw.numberToWords(6721157));
        System.out.println(ntw.numberToWords(-106721157));
        System.out.println(ntw.numberToWords(106070571));
        System.out.println(ntw.numberToWords(-92));
        System.out.println(ntw.numberToWords(0));
        System.out.println(ntw.numberToWords(1212121451));

    }
Convert a number into words

Reference
https://leetcode.com/problems/integer-to-english-words/
src/com/interview/misc/NumberToWord.java