package DataStructures.Stacks;

import java.util.Stack;

public class DecimalToAnyUsingStack {
 public static void main(String[] args) {
 assert convert(0, 2).equals("0");
 assert convert(30, 2).equals("11110");
 assert convert(30, 8).equals("36");
 assert convert(30, 10).equals("30");
 assert convert(30, 16).equals("1E");
 }

 /**
 * Convert decimal number to another radix
 *
 * @param number the number to be converted
 * @param radix the radix
 * @return another radix
 * @throws ArithmeticException if <tt>number</tt> or <tt>radius</tt> is invalid
 */
 private static String convert(int number, int radix) {
 if (radix < 2 || radix > 16) {
 throw new ArithmeticException(
 String.format("Invalid input -> number:%d,radius:%d", number, radix));
 }
 char[] tables = {
 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
 };
 Stack<Character> bits = new Stack<>();
 do {
 bits.push(tables[number % radix]);
 number = number / radix;
 } while (number != 0);

 StringBuilder result = new StringBuilder();
 while (!bits.isEmpty()) {
 result.append(bits.pop());
 }
 return result.toString();
 }
}