package Conversions; import java.io.BufferedReader; import java.io.InputStreamReader; import java.util.ArrayList; /** @author Varun Upadhyay (https://github.com/varunu28) */ // Driver Program public class DecimalToAnyBase { public static void main(String[] args) throws Exception { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); System.out.println("Enter the decimal input below: "); int decInput = Integer.parseInt(br.readLine()); System.out.println(); System.out.println("Enter the base below: "); int base = Integer.parseInt(br.readLine()); System.out.println(); System.out.println("Decimal Input" + " is: " + decInput); System.out.println( "Value of " + decInput + " in base " + base + " is: " + convertToAnyBase(decInput, base)); br.close(); } /** * This method produces a String value of any given input decimal in any base * * @param inp Decimal of which we need the value in base in String format * @return string format of the converted value in the given base */ public static String convertToAnyBase(int inp, int base) { ArrayList charArr = new ArrayList<>(); while (inp > 0) { charArr.add(reVal(inp % base)); inp /= base; } StringBuilder str = new StringBuilder(charArr.size()); for (Character ch : charArr) { str.append(ch); } return str.reverse().toString(); } /** * This method produces character value of the input integer and returns it * * @param num integer of which we need the character value of * @return character value of input integer */ public static char reVal(int num) { if (num >= 0 && num <= 9) return (char) (num + '0'); else return (char) (num - 10 + 'A'); } }