What are some common data structure interview questions?

What are some common data structure interview questions?

Some common data structure interview questions include:

1. Explain the difference between an array and a linked list.
2. How would you implement a stack using queues?
3. What is a binary search tree and how does it work?

Can you explain the difference between a stack and a queue?

Sure! A stack is a Last In First Out (LIFO) data structure, meaning the last element added is the first to be removed. A queue, on the other hand, is a First In First Out (FIFO) structure, where the first element added is the first to be removed.

What is a hash table and how is it used?

A hash table is a data structure that implements an associative array, a structure that can map keys to values. It uses a hash function to compute an index into an array of buckets or slots, from which the desired value can be found.

Can you give me an example of a coding question involving trees?

Certainly! A common coding question is: "Given a binary tree, write a function to check if it is a valid binary search tree." This tests your understanding of tree properties and traversal.