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posted on 28 Jul 2021
I applied via Campus Placement and was interviewed before Jul 2020. There was 1 interview round.
Check if binary tree is balanced or not.
A balanced binary tree has the height of left and right subtrees differ by at most 1.
Recursively check the height of left and right subtrees and compare.
Use a helper function to calculate the height of a subtree.
Time complexity: O(nlogn) for a balanced tree, O(n^2) for a skewed tree.
Detect loops in a linked list.
Use two pointers, one moving at a faster pace than the other.
If there is a loop, the faster pointer will eventually catch up to the slower one.
To detect the start of the loop, reset one pointer to the head and move both pointers at the same pace.
I applied via Walk-in and was interviewed before Mar 2021. There were 3 interview rounds.
Aptitude test
Current affairs
posted on 30 Jan 2021
I applied via Recruitment Consultant and was interviewed in Dec 2020. There were 3 interview rounds.
API testing methods involve functional, performance, security, and exploratory testing.
Functional testing ensures that the API meets the requirements and specifications.
Performance testing checks the API's response time, throughput, and resource utilization.
Security testing verifies the API's authentication, authorization, and encryption mechanisms.
Exploratory testing involves ad-hoc testing to discover defects and usa...
Sanity and Smoke are types of software testing. Sanity tests a specific functionality while Smoke tests the entire system.
Sanity testing is a narrow and deep testing approach while Smoke testing is a broad and shallow testing approach.
Sanity testing is performed after a small change in code while Smoke testing is performed after a major change in code.
Sanity testing is used to check if the critical functionalities are ...
Retesting is testing the same functionality again after fixing the defects. Regression is testing the unchanged functionality after making changes.
Retesting is done to ensure that the defects have been fixed and the functionality is working as expected.
Regression is done to ensure that the changes made to the software have not affected the existing functionality.
Retesting is a subset of regression testing.
Retesting is ...
posted on 15 Jul 2022
I applied via Referral and was interviewed before Jul 2021. There were 3 interview rounds.
If you are a fresher , then this is for you else almost no coding test for experienced candidates.
posted on 7 Mar 2023
Singleton design pattern restricts the instantiation of a class to a single instance and provides global access to it.
Used when only one instance of a class is required throughout the application
Provides a global point of access to the instance
Implemented using a private constructor, static method, and static variable
Example: Logger class, Database connection class
C# LINQ queries for group and sum data from data table
Use GroupBy() method to group data based on a specific column
Use Sum() method to calculate the sum of a column
Use Select() method to select the required columns
Solid design principles are a set of guidelines for writing maintainable and scalable code.
Single Responsibility Principle (SRP) - each class should have only one responsibility
Open/Closed Principle (OCP) - classes should be open for extension but closed for modification
Liskov Substitution Principle (LSP) - subclasses should be able to replace their parent classes without affecting the program's correctness
Interface Se...
posted on 3 Jun 2024
I applied via Campus Placement and was interviewed before Jun 2023. There were 2 interview rounds.
Basic aptitude test and was unproctored
posted on 23 Nov 2024
I applied via LinkedIn and was interviewed before Nov 2023. There were 2 interview rounds.
MCQ questions on OS, JS and HTML
Basic Questions from resume. String/Array DSA questions
I applied via Referral and was interviewed before Aug 2021. There were 2 interview rounds.
General topics like mathe, English, social etc
based on 2 reviews
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