Maps and sets are both collections of objects. In what ways are they different?

What will be an ideal response?


A set is a collection in which the objects are distinct. It can be efficiently searched to determine if the set
contains a particular object. A map contains objects that have keys and values. All of the keys in a map must be distinct, but the
values may not be distinct. A map can be searched to determine if it contains a particular key or value, and to retrieve the value
associated with a particular key.

Computer Science & Information Technology

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Write out the order of elements that are contained in a queue after the following operations are performed.

What will be an ideal response? ``` myQueue.enqueue(new Integer(8)); myQueue.enqueue(new Integer(6)); Integer num1 = myQueue.dequeue(); myQueue.enqueue(new Integer(3)); myQueue.enqueue(new Integer(4)); myQueue.enqueue(new Integer(15)); myQueue.enqueue(new Integer(12)); myQueue.enqueue(new Integer(9)); myQueue.dequeue(); myQueue.dequeue(); myQueue.dequeue(); myQueue.enqueue(new Integer(19)); ```

Computer Science & Information Technology

The __________ construct can be used to split an array into a number of values.

a. while() b. list() c. foreach() d. each()

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Most users actually receive only a small amount of spam in their local email inbox. The majority is blocked before it even reaches the user.

Answer the following statement true (T) or false (F)

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What information is returned by executing the command SELECT @@VERSION?

What will be an ideal response?

Computer Science & Information Technology