 asked in category: General Last Updated: 23rd January, 2020

# Which is more efficient stack or queue?

So the stack is much more efficient. So here is the thing: if Struct is a stack, then the maximum size of the structure will be O(L) , where L is the length of the palindrome. If Struct is queue, however, the maximum size of the structure will be O(a^L) , where a is the size of the alphabet.

Besides, which is better stack or queue?

Stack performs two operations known as push and pop while in Queue its known as enqueue and dequeue. Stack implementation is easier whereas Queue implementation is tricky. Queue has variants like circular queue, priority queue, doubly ended queue, etc. In contrast, stack does not have variants.

Additionally, why is stack useful? In general, stacks are useful for processing nested structures or for functions which call other functions (or themselves). As an abstract entity, a stack is defined by the operations of adding items to the stack, push(), and the operation of removing items from the stack, pop().

Consequently, what is the difference between a queue and stack?

Difference Between Stack and Queue. Stack and Queue both are the non-primitive data structures. The main differences between stack and queue are that stack uses LIFO (last in first out) method to access and add data elements whereas Queue uses FIFO (First in first out) method to access and add data elements.

Where are stacks and queues used?

Stacks and Queues are both very frequently used in programming to aid in solving graph theory problems. For graph theory, stacks are most commonly used to solve derivative problems of DFS whereas Queues are used for a broader range of things like BFS, MST, and traversal of data structures.

### What do you mean by priority queue?

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23rd January, 2020

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