Happay Interview Questions, Process, and Tips

60 Minutes coding test was there

Q1. Worst experience ever, never apply for company in this, highly unstable company
Add your answer
Q2. Add two numbers in a linked list, don't apply
Ans. 
Traverse the linked list and add the values of each node without using additional data structures.
• Traverse the linked list while keeping track of the sum in a variable

• Update the sum by adding the value of each node as you traverse the list

• Handle carry over if the sum of two nodes is greater than 9
Answered by AI
Add your answer
Q3. Sort the array by using all sorting algorithms, don't join
Add your answer
Q4. Subset problem find all the subsets
Ans. 
To find all subsets of a given set, use recursion to generate all possible combinations.
• Use recursion to generate all possible combinations of including or excluding each element in the set.

• Start with an empty subset and recursively add each element to create new subsets.

• Each subset can be represented as an array of strings.
Answered by AI
Add your answer
Q5. LRU Cache problem, explain it and implement it
Ans. 
LRU Cache is a data structure that stores a fixed number of items and removes the least recently used item when the cache is full.
• LRU Cache uses a combination of a doubly linked list and a hashmap to efficiently store and retrieve items.

• When an item is accessed, it is moved to the front of the linked list to indicate it is the most recently used item.

• If the cache is full, the least recently used item at the end of the ...read more
Answered by AI
Add your answer

Q1. How will you be able to deliver on the job? How will you use your skills and experience? What will be your approach?
Add your answer
Q2. What is your plan?
Add your answer

Q1. How will you utilize your skills and experience at this job?
Add your answer
Q2. How will you bring a positive change?
Add your answer

Q1. Salary Discussion
Add your answer

There were two coding questions - one medium and one hard.

Q1. Projects Discussion and Cross Questions
Add your answer
Q2. Case Study on one of the LLD question
Add your answer

Q1. Salary Discussion and Onboarding
Add your answer

General Aptitude questions, Logical Reasoning ,Data Structures and Networking

Q1. Basic Coding questions and general OOPS Concepts
Add your answer

Q1. Explaining Several Concepts about java and some SQL queries and Concepts of networking
Add your answer

Q1. General Discussion about Yourself and The Company
Add your answer