PolicyBazaar Senior Software Developer Interview Questions and Answers

Q1. Balanced parathesis? write code and explain
Ans. 
Balanced parenthesis code implementation
• Use a stack to keep track of opening brackets

• When a closing bracket is encountered, check if it matches the top of the stack

• If it matches, pop the top of the stack

• If the stack is empty at the end, the parentheses are balanced
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Q2. Minimun time required to rot all oranges in a box full of good and rot oranges
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MC question where they asked us to implement on our own system

Q1. Water trap problem
Ans. 
The water trap problem involves finding the minimum amount of water that can be trapped between blocks.
• Calculate the maximum height of blocks on left and right of each block.

• Find the minimum of the two heights and subtract the height of the current block to get trapped water.

• Sum up the trapped water for all blocks to get the total trapped water.
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Data and Algo test need to do live in front of interviewers.

Q1. What is ambitionbox
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Q2. How many questions are there in that
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Q1. Same as above questions
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Q2. Same as above questions second one
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Basic questions only.

Q1. Basic questions like, how react works?
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Q2. What is the equivalent of ReactDOM in mobile application development?
Ans. 
The equivalent of ReactDOM in mobile application development is React Native.
• React Native is a framework for building mobile applications using React.

• It allows developers to write code in JavaScript and render native components.

• Just like ReactDOM in web development, React Native handles rendering components to the screen.
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BFS Implementation of a jug question.

Q1. Few hashmap questions
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Q2. Object Oriented Programming questions
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String and DP questions

Q1. Design BookMyShow
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Q1. Past challenging projects
Ans. 
Developed a real-time data processing system for a high-traffic e-commerce platform.
• Implemented distributed computing using Apache Kafka and Spark.

• Optimized database queries to handle large volumes of data.

• Designed fault-tolerant architecture to ensure system reliability.

• Collaborated with cross-functional teams to meet project deadlines.
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Q1. What is react, and why you chose it
Ans. 
React is a JavaScript library for building user interfaces, known for its efficiency and flexibility.
• React allows for the creation of reusable UI components, making development faster and more efficient.

• It uses a virtual DOM for optimal performance by only updating the necessary components when data changes.

• React's component-based architecture promotes code reusability and maintainability.

• It has a large and active comm...read more
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