/**
 * File: Utility.java
 * Author: Brian Borowski
 * Date created: June 30, 2011
 * Date last modified: July 1, 2011
 */
public class Utility {

    public static String binary8BitCode(final char character) {
        final String s = binaryNumber(character);
        final StringBuilder padding = new StringBuilder();
        for (int i = 0, charsToPad = 8 - s.length(); i < charsToPad; ++i) {
            padding.append("0");
        }
        return padding.toString() + s;
    }

    public static String binaryNumber(final int i) {
        if (i == 0 || i == 1) {
            return String.valueOf(i);
        }
        return binaryNumber(i >> 1) + (i % 2);
    }

    public static boolean isPowerOfTwo(final int x) {
        final String s = binaryNumber(x);
        for (int i = 1, length = s.length(); i < length; ++i) {
            if (s.charAt(i) != '0') {
                return false;
            }
        }
        return true;
    }
}