BigShyft Senior Software Engineer Interview Questions and Answers for Experienced

1st round was DSA, Algo round with 2 questions

Q1. Left view of binary tree
Ans. 
Left view of a binary tree is the set of nodes visible when the tree is viewed from the left side.
• Traverse the tree level by level from left to right

• Keep track of the first node encountered at each level

• Use a queue data structure for level order traversal
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50 questions in 12mins

Q1. Basic DSA question in binary search and memoization
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Q1. Minimum Knight Moves (LC Medium)
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Q2. OS, CN, DB concepts like multithreading, semaphore, tcp vs udp, transaction and ACId properties. Java concepts like stack vs heap(memory), error vs exception. Any 1 Project discussion for 10 mins
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Given an simple gaming questions to be developed in JS

Given another UI design in image to be developed

Q1. 1. Questions around projects : JWT, UserAuthentication etc
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Q2. 2. Write a code to find frequency of characters in a given string?
Ans. 
Code to find frequency of characters in a given string
• Use a hash table to store character frequencies

• Iterate through the string and update the hash table accordingly

• Print the hash table to display the character frequencies
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Q1. 1. Write a code to reverse a linked list?
Ans. 
Code to reverse a linked list
• Create three pointers: prev, curr, and next

• Initialize prev to null and curr to head

• Loop through the list and set next to curr's next node

• Set curr's next node to prev

• Move prev and curr one node ahead

• Return prev as the new head
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Q2. 2. Write a code to reverse linked list in size of K?
Ans. 
Code to reverse linked list in size of K
• Create a function that takes head of linked list and size K as input

• Traverse the linked list in groups of K nodes

• Reverse each group of K nodes using iterative or recursive approach

• Connect the reversed groups to form the final linked list

• Return the new head of the reversed linked list
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Q3. 3. Questions around project and design a database structure for comments system of quora?
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Q1. Basic HR round questions
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Q1. Tell me about yourself
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Q1. Technical questions
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Simple java questions including theory and code snippet

Q1. Iterate collection and do some options on some perticular elements?
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Q2. Palandrone string Or pattern program Or string related program?
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Q1. Linux commands operating system?
Ans. 
Linux commands are used to interact with the operating system through the command line interface.
• Linux commands are case-sensitive

• Commands are typically followed by options and arguments

• Common commands include ls (list files), cd (change directory), mkdir (make directory)

• Commands can be combined using pipes (|) and redirection symbols (> and <)
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Q2. Html css javascript theory questions
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Q1. Salary discuss and general questions?
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Q2. They ask for join immediately?
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C, C++, Java, PHP i can do this programming for coding test

Q1. What is Java? What is Class? What is Polymorphism? What is Backend web development? What is Data Abstraction? What is Artificial Intelligence? What is a software? What is Frontend web development? What i...read more
Ans. 
Java is a popular programming language used for developing a wide range of applications.
• Java is an object-oriented language.

• It is platform-independent and can run on any device with a Java Virtual Machine (JVM).

• Java is known for its robustness, security, and scalability.

• It is widely used in web development, mobile app development, and enterprise software development.
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Q2. What is Method Overloading?
Ans. 
Method Overloading is the ability to have multiple methods with the same name but different parameters.
• Method Overloading is a feature of object-oriented programming.

• It allows a class to have multiple methods with the same name but different parameters.

• The compiler determines which method to call based on the number and types of arguments passed.

• Example: void print(int x), void print(String s), void print(int x, String
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Q3. What is Abstract class?
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An abstract class is a class that cannot be instantiated and is used as a base class for other classes.
• An abstract class can have abstract and non-abstract methods.

• Abstract methods have no implementation and must be implemented by the derived class.

• An abstract class can have constructors and instance variables.

• An abstract class can be used to define a common interface for a group of related classes.

• Example: Animal is a...read more
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