Java Ch. 17 Quiz

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Java Ch. 17 Quiz

Stacks and Queues

In a queue, which element in the list would be popped? *

The last one that was put in.

The first one that was put in.

The element that comes first lexicographically

None of the above

What is E in Java? *

A type of queue

A Java Generic that can stand in for a specific type

An easy way to catch exceptions in Queues and Stacks

An interface which is implemented by Queues and Stacks

Which Queue or Stack method does NOT use zero-indexing? *

add(E e)

offer(E e)

search(Object)

pop()

If I fill a queue and a stack with the numbers 4, 59, 125(in that order), which number would be returned if I run peek()? *

Queue: 4; Stack: 125;

Stack: 125; Queue: 4;

Stack: 125; Queue: 125;

Stack: 4; Queue 4;

Code for question below

Stack<Integer> example = new Stack<Integer>();
System.out.print(example.empty() + “ “);
example.push(1);
System.out.print(example.pop() + “ “ + example.empty());

What does the code above output? *

false 1 true

true false

true 1 true

false true

What would be the best use of a Queue? *

Storing a list of random numbers

Storing the survey results of a random sample

Storing the participants in a quiz game in order of how fast they answered

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