Covert repeating day flags to an integer

gistfile1.java

public static int booleanArrayToInt(boolean[] dayFlags) {
    int result = 0;
    for (int i = 0; i < dayFlags.length; i++) {
        result += (dayFlags[i]? 1 : 0) * Math.pow(2, i);
    }
    return result;
}

public static boolean[] intToBooleanArray(int days) {
    boolean[] result = new boolean[7];
    for (int i = result.length - 1; i >= 0; i--) {
        int pow = (int) Math.pow(2, i);
        if (days > (pow - 1)) {
            result[i] = true;
            days -= pow;
        } else {
            result[i] = false;
        }
    }

    return result;
}