Recursion is often less efficient than iteration because ________.
a. it can cause an explosion of method calls.
b. it is not as intuitive.
c. recursive methods are harder to debug.
d. recursive methods take longer to program.
a. it can cause an explosion of method calls.
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The GeometricObject and Circle classes are defined in this chapter. Analyze the following code. Which statements are correct?
``` public class Test { public static void main(String[] args) { GeometricObject x = new Circle(3); GeometricObject y = (Circle)(x.clone()); System.out.println(x); System.out.println(y); } } ``` a. The program has a compile error because the clone() method is protected in the Object class. b. After you override the clone() method and make it public in the Circle class, the problem can compile and run just fine, but y is null if Circle does not implement the Cloneable interface. c. To enable a Circle object to be cloned, the Circle class has to override the clone() method and implement the java.lang.Cloneable interface. d. If GeometricObject implements Cloneable and Circle overrides the clone() method, the clone() method will work fine to clone Circle objects.
COGNITIVE ASSESSMENT If you are looking for an online social network that allows you to include recommendations from people who know you professionally, which of the following is the best match for you?
A. Facebook B. Twitter C. LinkedIn D. Digg
If an organization is taking a "store everything" approach to data, it will save all the data in its raw and unaltered form in a _____.?
Fill in the blank(s) with the appropriate word(s).
__________________ make it possible for Web sites to customize pages for users, such as an e-commerce Web site recommending items based on your past purchases.
A) Cookies B) Trojans C) Applets D) Kernels