import java.io.*;
class MoneyConversion {
public static void main(String[] args) {
EnglishDecimalFormat f = new EnglishDecimalFormat();
System.out.println("*** " + f.convert(0));
System.out.println("*** " + f.convert(1));
System.out.println("*** " + f.convert(16));
System.out.println("*** " + f.convert(100));
System.out.println("*** " + f.convert(118));
System.out.println("*** " + f.convert(200));
System.out.println("*** " + f.convert(219));
System.out.println("*** " + f.convert(800));
System.out.println("*** " + f.convert(8010));
System.out.println("*** " + f.convert(1316));
System.out.println("*** " + f.convert(1000000));
System.out.println("*** " + f.convert(2000000));
System.out.println("*** " + f.convert(3000200));
System.out.println("*** " + f.convert(700000));
System.out.println("*** " + f.convert(9000000));
System.out.println("*** " + f.convert(123456789));
System.out.println("*** " + f.convert(-45));
}
private static final String[] majorNames = {
"",
" thousand",
" million",
" billion",
" trillion",
" quadrillion",
" quintillion"
};
private static final String[] tensNames = {
"",
" ten",
" twenty",
" thirty",
" fourty",
" 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 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 String convert(int number) {
/* special case */
if (number == 0) { return "zero"; }
String prefix = "";
if (number < 0) {
number = -number;
prefix = "negative";
}
String soFar = "";
int place = 0;
do {
int n = number % 1000;
if (n != 0){
String s = convertLessThanOneThousand(n);
soFar = s + majorNames[place] + soFar;
}
place++;
number /= 1000;
} while (number > 0);
return (prefix + soFar).trim();
}
}
/*
*** zero
*** one
*** sixteen
*** one hundred
*** one hundred eighteen
*** two hundred
*** two hundred nineteen
*** eight hundred
*** eight hundred one
*** one thousand three hundred sixteen
*** one million
*** two million
*** three million two hundred
*** seven hundred thousand
*** nine million
*** one hundred twenty three million four hundred
** fifty six thousand seven hundred eighty nine
*** negative fourty five
*/