Zopsmart Technology Software Development Engineer II Interview Questions and Answers

2 Leetcode Medium questions on hackerrank

Q1. Kadane algorithm based question
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Q2. Leetcode medium
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Q3. Resume based questions
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Q1. Probability question math problem
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Q2. Puzzle to solve
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Q3. AI based question
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Q4. 1 question to solve Leetcode medium
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2 Query question and 3 coding questions

Q1. Basic oops , Java script and Networking questions.
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Q2. What is object orienteered programming.
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Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
• Objects are instances of classes, which define the structure and behavior of the objects.

• Encapsulation, inheritance, and polymorphism are key principles of object oriented programming.

• Example: Java, C++, Python are popular languages that support object oriented programming.
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Q3. Different Events in java script
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Events in JavaScript are actions or occurrences that happen in the browser that the code can respond to.
• Events can be triggered by user actions (like clicking a button), browser actions (like page load), or system events (like a timer expiring)

• Event listeners are used to listen for and respond to events

• Common events include click, mouseover, keydown, submit, etc.
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Q4. Event listeners
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Project , coding question, DBMS

Q1. Basic personal details
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2 DSA questions Both are from DP

Q1. 2 Questions , 1 is DSA
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Q2. Second question is Puzzle
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Q1. Pointless basic questions is what they asked
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Q1. They had this round for hours together
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Basic dsa questions and java spring boot questions

Q1. Bookmyshow design
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Q2. Notification service design
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Design a notification service for sending alerts to users.
• Use a scalable messaging system like Kafka or RabbitMQ to handle high volume of notifications.

• Implement a notification queue to ensure reliable delivery of notifications.

• Include support for different types of notifications such as email, SMS, and push notifications.

• Allow users to customize their notification preferences and frequency.

• Implement monitoring and log...read more
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Q1. Mimic Dataframe Merge
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Implement a function to mimic the functionality of merging two DataFrames in Python.
• Create a function that takes two DataFrames as input.

• Merge the two DataFrames based on a common column or index.

• Handle different types of joins like inner, outer, left, and right joins.

• Return the merged DataFrame as output.
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Q2. Improve above case by case
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1 hour - Find longest palindromic substring

60 Minutes coding test was there

Q1. Worst experience ever, never apply for company in this, highly unstable company
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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
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Q3. Sort the array by using all sorting algorithms, don't join
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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.
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Q5. LRU Cache problem, explain it and implement it
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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
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Q1. 2 rounds, 2 coding questions in each round. Managerial round.
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