How_much _money_do_you_have

package maricka.kolokolova;

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		System.out.println("How much money do you have?");
		double num = sc.nextDouble();

		String str = String.valueOf(num);

		sc.close();

		String[] numbers = new String[91];

		numbers[0] = "";
		numbers[1] = "one";
		numbers[2] = "two";
		numbers[3] = "three";
		numbers[4] = "four";
		numbers[5] = "five";
		numbers[6] = "six";
		numbers[7] = "seven";
		numbers[8] = "eight";
		numbers[9] = "nine";

		numbers[10] = "ten";
		numbers[11] = "eleven";
		numbers[12] = "twelve";
		numbers[13] = "thirteen";
		numbers[14] = "fourteen";
		numbers[15] = "fiveteen";
		numbers[16] = "sixteen";
		numbers[17] = "seventeen";
		numbers[18] = "eighteen";
		numbers[19] = "nineteen";

		numbers[20] = "twenty";
		numbers[30] = "thirty";
		numbers[40] = "forty";
		numbers[50] = "fifty";
		numbers[60] = "sixty";
		numbers[70] = "seventy";
		numbers[80] = "eighty";
		numbers[90] = "ninety";

		char d = '.';
		int c;
		String stringDollar;
		String stringCent;
		String strNew = "";
		String prd = "";
		String strFinalDollar = "";
		String strFinalDollarTmp = "";
		String strFinalCent = "";
		int s = 0;
		int n;
		int nPr;

		c = str.indexOf(d);

		stringDollar = str.substring(0, c);
		stringCent = str.substring(c + 1, str.length());

		char[] dollar = stringDollar.toCharArray();
		char[] cent = stringCent.toCharArray();
		int st = 0;
		int ed = 0;

		// dollar
		
		int step;

		if (stringDollar.length() % 3 == 0) {
			step = stringDollar.length() / 3;
		} else {
			step = stringDollar.length() / 3 + 1;
		}

		for (int i = 1; i <= step; i++) {

			if (i == 1) {
				ed = dollar.length - 1;
			} else {
				ed = st - 1;
			}

			st = dollar.length - 3 * i;
			if (st < 0) {
				st = 0;
			}

			s = 0;
			strFinalDollarTmp = "";
			for (int j = ed; j >= st; j--) {
				s = s + 1;
				n = Character.getNumericValue(dollar[j]);

				strNew = numbers[n];

				if (s == 2 && n == 1) {
					nPr = Character.getNumericValue(dollar[j + 1]);
					strFinalDollarTmp = "";
					// 10,11,12...
					strNew = numbers[nPr + 10];
				}

				if (s == 2 && n != 1) {
					// 20,30,40...
					strNew = numbers[n * 10];
				}

				if (s == 3) {
					strNew = strNew + " hundred";
				}

				if (j == dollar.length - 4) {
					prd = " thousand";
				}

				if (j == dollar.length - 7) {
					prd = " million";
				}
				if (j == dollar.length - 10) {
					prd = " billion";
				}

				strFinalDollarTmp = strNew + " " + prd + " " + strFinalDollarTmp;
				prd = "";

			}
			strFinalDollar = strFinalDollarTmp + strFinalDollar;
		}
		// Cents
		s = 0;
		for (int k = 0; k < cent.length; k++) {
			s = s + 1;
			n = Character.getNumericValue(cent[k]);
			if (s == 1) {
				// 20,30,40...
				strNew = numbers[n * 10];
			} else {

				nPr = Character.getNumericValue(cent[k - 1]);
				if (s == 2 && nPr == 1) {
					strFinalCent = "";

					// 10,11,12...
					strNew = numbers[n + 10];
				} else {
					strNew = numbers[n];
				}
			}
			strFinalCent = strFinalCent + " " + strNew;
		}

		if (strFinalCent.contentEquals(" ")) {
			strFinalCent = "";
		} else {
			strFinalCent = strFinalCent + " cents";
		}
		
		if (strFinalDollar.contentEquals("  ")) {
			strFinalDollar = "";
		} else {
			strFinalDollar = strFinalDollar + " dollars";
		}
		
		if (!strFinalCent.isEmpty() && !strFinalDollar.isEmpty()) {
			strFinalCent = " and " + strFinalCent;
		}
		
		
		System.out.println("You have: " + strFinalDollar +  strFinalCent);
	}

}