Ds Digital Interview Questions and Answers

Apti test 15 questions easy

3 coding easy to medium any language

Q1. Oops concept ,project
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Q2. Coding question
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Q3. Puzzles and all
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An aptitude problem categorized as easy to medium level.

Medium-level coding questions.

Q1. They will ask about your project and they will ask how you solve the questions from coding round and they will modify the questions from coding round and ask uou
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Q1. Basic HR questions
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Map coding in C++ : what data structure to use which is fastest for retrieval of data

Q1. Fastest data structure retrieval by providing the key value.
Ans. 
Hash table is the fastest data structure for retrieval by providing the key value.
• Hash table uses a hash function to compute an index into an array of buckets or slots, from which the desired value can be found.

• Example: Python dictionary, Java HashMap, C++ unordered_map.

• Complexity: O(1) on average for retrieval.
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Face to Face interview

Face to Face round
1. Reverse LinkedList
2. Find an element in BSt

Q1. Why you want to join EFI?
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Q1. Frontend related questions
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Backend fastapi questions

Q1. This is for freshers
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Q2. All rounds information
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Normal dsa questions

Q1. Questions related to OOPs, multi threading etc
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Q2. Explain OPPs with example
Ans. 
Object-oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
• Objects: Instances of classes that encapsulate data and behavior

• Classes: Blueprint for creating objects with attributes and methods

• Inheritance: Allows a class to inherit attributes and methods from another class

• Polymorphism: Ability for objects to take on different forms or behaviors

• Encapsulation: Bund...read more
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Q3. Explain Encapsulation
Ans. 
Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.
• Encapsulation helps in hiding the internal state of an object and only exposing necessary functionalities.

• It allows for better control over the data by preventing direct access from outside the class.

• Encapsulation promotes code reusability and modularity by organizing related data and methods together.

• Example: In a cla...read more
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Q1. Framework level and technology level questions
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Q1. Coding ques of medium level
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