# To convert binary number to a decimal number
public class BinaryDecimal {
  public static void main(String[] args) {
    long num = 11011;
    int decimal = convertBinaryToDecimal(num);
    System.out.printf("%d in binary = %d in decimal", num, decimal);
  }
  public static int convertBinaryToDecimal(long num) {
    int decimalNumber = 0, i = 0;
    long remainder;
    while (num != 0) {
      remainder = num % 10;
      num /= 10;
      decimalNumber += remainder * Math.pow(2, i);
      ++i;
    }
    return decimalNumber;
  }
}