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Data Structure Interview Practice Questions - Stack
What is a stack?
Stack is another common linear data structure; a stack is
very similar to a list
except that a stack is more restricted where elements that
are inserted last are
removed first.
What are the restrictions in stack?
We have restricted the access of elements in a stack, where
we use one end of the
list by using the pop and push operations.
What is LIFO?
[Last In First Out]To get to the bottom item, we must first
remove all the items
above it. This behavior is sometimes described as
"last-in, first-out" or LIFO
since the last item to enter the stack is the first item to
leave the stack.
Define depth of a stack?
The depth of stack is the number of elements it contains. An
empty stack has
depth zero.
What is the benefit of using stacks?
Stacks provide a very efficient storage structure for
manipulating data that is
accessed according to the LIFO method. Stacks are often used
as temporary
storage where the elements stored last needs to be removed
first.
What are the basic operations in stack?
Push- Add and item
Pop-Remove an item
Stack Top – Top elements of the stack.
Practice Questions on Stack
User push 1 element in the stack having already five
elements and having stack size as 5 then stack becomes ___________.
a).Underflow
b).Overflow
c).Crash
d).User Flow
In the stack, If user try to remove element from the empty
stack then it called as _______
a).Garbage Collection
b). Underflow of Stack
c). Empty collection
d). Overflow of stock.
Process of removing element from the stack is called as
_______.
a).Pop
b). Delete
c). Push
d). Remove
In the stack process of inserting an element in the stack is
called as ___________.
a).Pop
b).Push
c).Evaluation
d).Create
Stack in data structure is _________.
a) FIFO
b) None of these
c) LILO
d) LIFO
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