Medly Software Systems Sde1 Interview Questions and Answers

Q1. They asked Java coding question
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Q1. Basic all type questions
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Q1. Project related and technology se related
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This round has 3 coding questions mostly based on graph and trees

Q1. A lockable tree problem
Ans. 
Design a data structure for locking/unlocking nodes in a binary tree efficiently.
• Implement a lockable tree data structure with lock(), unlock(), and isLocked() methods.

• Ensure a node can only be locked if all ancestors are unlocked and all descendants are locked.

• Optimize the operations for efficiency.

• Consider using a flag in each node to track its locked status.

• Use a recursive approach to check locking conditions.

• Mainta...read more
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Q2. OS level improvements in above problem
Ans. 
Improving the operating system can enhance performance and efficiency of the system.
• Optimizing memory management to reduce overhead

• Implementing better scheduling algorithms to improve multitasking

• Enhancing file system performance for faster data access

• Improving network stack for better communication speed
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Q1. Valid parenthesis
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Q2. Generate parenthesis
Ans. 
Generate all valid combinations of parentheses
• Use backtracking to generate all valid combinations

• Keep track of the number of open and close parentheses used

• Add open parenthesis if there are remaining open parentheses, add close parenthesis if there are more open than close parentheses
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Q1. Details of what we did on college , project and few programs .
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If the cost price of an item is Rs. 150 and the selling price is Rs. 200, what is the profit percentage?

Q1. What is the difference between a stack and a queue? Give an example where you would use each.
Ans. 
A stack is a LIFO data structure while a queue is a FIFO data structure.
• Stack: Last In First Out (LIFO), used in undo/redo functionality, backtracking, and recursion.

• Queue: First In First Out (FIFO), used in job scheduling, breadth-first search, and printing.

• Stack uses push() and pop() operations while queue uses enqueue() and dequeue() operations.
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Q2. What is the difference between a compiler and an interpreter?
Ans. 
A compiler translates the entire program into machine code before execution, while an interpreter translates and executes the program line by line.
• A compiler converts the source code into an executable file, while an interpreter executes the code directly.

• Compilers typically produce faster and more efficient code, while interpreters provide faster development and debugging.

• Examples of compilers include GCC, Clang, and ...read more
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Q3. A compiler is a program that translates the entire source code into machine code before executing it. The source code is fed into the compiler, which analyzes and translates it into an executable file. Thi...read more
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Q1. How do you handle stress and pressure?
Ans. 
I handle stress and pressure by practicing time management, seeking support from colleagues, and maintaining a healthy work-life balance.
• I prioritize tasks and create a schedule to manage my time effectively.

• I communicate with my team and seek their assistance or guidance when needed.

• I engage in stress-relieving activities outside of work, such as exercising or spending time with loved ones.

• I practice mindfulness and d...read more
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Q1. Self Introduction
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Q1. How to secure data over the public internet?
Ans. 
Securing data over the public internet involves using encryption, secure protocols, VPNs, and regular security audits.
• Use encryption to protect data in transit, such as SSL/TLS for websites.

• Implement secure protocols like HTTPS, SSH, and SFTP for secure communication.

• Utilize Virtual Private Networks (VPNs) to create secure tunnels for data transmission.

• Regularly conduct security audits and updates to identify and patch...read more
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