Data Structures Interview Questions for Interns
Q1. What is a Data Structure?
A way to store and organize data efficiently.
Q2. What is an Array?
Stores multiple values of same type.
int arr[3] = {1,2,3};
Q3. What is a Linked List?
A collection of nodes where each node points to the next.
Advantage: Dynamic size
Q4. Stack vs Queue
- Stack: LIFO
- Queue: FIFO
Q5. What is Time Complexity?
Measures algorithm efficiency.
Example:
Linear search → O(n)
