/**
 * Converter illustrates a sample usage of the << and >> operators.  They
 * are used to convert between binary and decimal.
 *
 * @author Mark Roth
 */
public class Converter {
  /**
   * Execution starts here
   */
  public static void main( String[] args ) {
    System.out.println( "66 in binary is: " + decToBinary( 66 ) );
    System.out.println( "10110 in decimal is: " + 
      binaryToDec( "10110" ) );
  }

  /**
   * Converts decimal to binary
   *
   * @param dec The decimal number to convert
   * @return A string containing the binary number.
   */
  public static String decToBinary( int dec ) {
    String result = "";

    while( dec > 0 ) {
      result = (dec & 1) + result;
      dec >>= 1;
    }

    return result;
  }

  /**
   * Converts binary to decimal
   *
   * @param bin The binary number to convert
   * @return An integer containing the decimal number.
   */
  public static int binaryToDec( String bin ) {
    int i, result = 0;

    for( i = 0; i < bin.length(); i++ ) {
      result <<= 1;
      if( bin.charAt( i ) == '1' ) result++;
    }

    return result;
  }

}