nference SDE Interview Questions and Answers

30 min exam online test with easy and medium leetcode questions. Precisely Bulls and Cow problem and remove K digits leetcode questions

Q1. What is oops concepts
Ans. 
Object-oriented programming concepts that focus on data encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

• Inheritance: Ability of a class to inherit properties and behavior from another class.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex implementation detai...read more
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Q1. 1. I was asked to create bst from preorder and inorder 2. Basic OOPs concepts 3. Question on finding the highest profit after selling the stocks
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Q2. 4. Question from projects
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Too easy simple appitude questions

Q1. Asked too many SQL questions more focused on set operations union and intersection
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Q2. Fibonacci series using dp and recursion
Ans. 
Fibonacci series can be generated using dynamic programming and recursion.
• Dynamic programming involves storing the values of previous calculations to avoid redundant calculations.

• Recursion involves calling the function within itself to generate the series.

• DP solution has O(n) time complexity while recursive solution has O(2^n) time complexity.

• DP solution uses an array to store the values while recursive solution uses f...read more
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Q3. Asked me many things related to transaction in database
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Q1. Rudest interviewer I have ever met. question 1 was on smaller palindromic year. 3-4 puzzles (gfg types) some SQL questions. idk what if he wants to check my temper by asking silly questions so I become rud...read more
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Q1. Family background and all and I was selected in the end
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