An iterator that is fail-fast will throw an exception if __________.

Select one:

Which of the following methods inserts an element into a stack data structure?

Select one:

a.enqueue

b.dequeue

c.insert

d.pop

e.push

Suppose X is an empty unordered list. What is the result of the following sequence of operations? X.addToRear("Tom"); X.addToRear("Dick"); X.addToRear("Harry");

Select one:

a."Tom"

b."Harry"

c."Harry", "Dick", "Tom"

d."Dick", "Harry", "Tom"

e."Tom", "Dick", "Harry"

Which of the following is not a method of the Iterator interface?

Select one:

a.hasNext()

b.next()

c.remove()

d.iterator()

e.None of the above

Which of the following is always true for a priority queue?

Select one:

a.Elements are stored using a FIFO queue.

b.Elements are stored using a LIFO stack.

c.Elements must be added in priority order.

d.An element with the highest priority is retrieved first.

e.None of the above is always true.