Zazz IT Solutions HR Associate Interview Questions and Answers

Q1. How make a queue using a stack
Ans. 
To implement a queue using a stack, use two stacks and simulate the queue operations.
• Use two stacks, one for enqueue operation and one for dequeue operation.

• For enqueue operation, simply push elements onto the stack used for enqueueing.

• For dequeue operation, if the dequeue stack is empty, pop all elements from enqueue stack and push onto dequeue stack.

• Then pop from the dequeue stack to simulate dequeue operation.
Answered by AI
Add your answer
Q2. Create a linked list
Ans. 
A linked list is a data structure consisting of nodes where each node points to the next node in the sequence.
• Create a Node class with data and next pointer

• Initialize a head pointer to null

• Add nodes by updating next pointers

• Traverse the list by following next pointers
Answered by AI
Add your answer

Coding questions about array and string.

Cosing questions about sql and ds.

Q1. Personal and behavioral questions.
Add your answer

Easy to medium leetcode questions

2 questions of DSA medium to hard

Basic coding questions

Q1. Question about current project.
Add your answer
Q2. Basic Java, spring questions
Add your answer

Q1. Basic HR questions
Add your answer

Basic Aptitude questions were there which I think anyone can clear.

2 easy level programming questions were asked.

Q1. Introduction, background, interest, vision.
Add your answer

Coding test consists of easy to medium difficulty problems.

Q1. HashMap in java
Ans. 
HashMap in Java is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.
• HashMap is part of the Java Collections framework.

• It uses hashing to store key-value pairs, allowing for O(1) retrieval time on average.

• Keys in a HashMap must be unique, but values can be duplicated.

• Example: HashMap map = new HashMap<>(); map.put("key1", 1); int value = map.get("key1");
Answered by AI
Add your answer

It was mostly on JavaScript

Q1. Focused on react
Add your answer

Q1. Brief about project
Add your answer