Modak Analytics Application Developer Interview Questions and Answers

Q1. Data structures
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Q2. Solid Principles
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Q3. Single responsibility principle
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Single responsibility principle states that a class should have only one reason to change.
• Each class should have only one responsibility

• Helps in making code more maintainable and easier to understand

• Promotes separation of concerns

• Example: A class that handles user authentication should not also handle file management
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Q4. Javascript question
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Q5. Object oriented concepts
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3 questions 3 sum linked list missing sum

Q1. System Design and hr principles
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System design involves creating a high-level architecture of a software system, while HR principles focus on managing people effectively.
• System design involves identifying components, defining their interactions, and ensuring scalability and reliability.

• HR principles include hiring the right talent, providing training and development opportunities, and fostering a positive work culture.

• Both system design and HR princip...read more
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Q2. Projects discussion
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Q1. Valid parentheses
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Q2. Currying with arrow function
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Currying is a technique in functional programming where a function with multiple arguments is transformed into a sequence of nested functions, each taking a single argument.
• Currying can be achieved using arrow functions in JavaScript.

• Arrow functions automatically bind 'this' and do not have their own 'this' value.

• Example: const add = a => b => a + b;

• Example: const addFive = add(5); const result = addFive(3); // result
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Q1. DFS related problem
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Q2. Machine coding round
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First round was aptitude with coding round it was easy

Q1. To check communication
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Q1. Ask question based on datastructures
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Q1. DSA Next Greater element 2 Cycle in Linked List and if cycle remove it Best time to buy and sell stocks Coin Change
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Key DSA problems: Next Greater Element, Cycle in Linked List, Stock Trading, and Coin Change.
• Next Greater Element: Find the next greater number for each element in an array. Example: For [4, 5, 2, 10], result is [5, 10, 10, -1].

• Cycle in Linked List: Detect and remove a cycle using Floyd's Tortoise and Hare algorithm. If a cycle exists, find the start and remove it.

• Best Time to Buy and Sell Stocks: Maximize profit by fi...read more
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Q2. Pyspark Optimisation techniques Wide and Narrow Transportmations Application Master
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Q3. SQL Top 3 salaries per department Total working hours for an employee
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1st round was DSA round. Pretty easy

Two coding questions, one is easy and the other is difficult. Who solved 2nd question was shortlisted for an interview.

Q1. Introduce yourself—questions from OS, DBMS, DSA, Project, and one coding problem.
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