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I was interviewed before Feb 2024.
There were two coding questions; one was related to linked lists, and the other was linked to binary trees.
Developed a web application for tracking inventory and sales data
Used React for front-end development
Implemented RESTful APIs using Node.js and Express for back-end
Utilized MongoDB for database management
Integrated authentication and authorization features for secure access
Implemented data visualization using Chart.js
Reversing a linked list involves changing the direction of pointers to go from the end to the beginning.
Start by initializing three pointers: current, previous, and next.
Iterate through the linked list, updating the pointers to reverse the direction of the links.
Update the head of the linked list to point to the new first node, which was the original last node.
Program to find perfect squares between two numbers
Iterate through numbers between the given range
Check if the square root of the number is an integer
If yes, then it is a perfect square
Smart pointers in C++ are objects that act like pointers but provide automatic memory management.
Smart pointers help prevent memory leaks by automatically managing memory allocation and deallocation.
Examples include unique_ptr, shared_ptr, and weak_ptr.
unique_ptr is used for exclusive ownership, shared_ptr for shared ownership, and weak_ptr to prevent circular references.
Mutual exclusion is a concept in concurrent programming where only one thread can access a shared resource at a time.
Ensures that only one thread can access a critical section of code at a time
Prevents race conditions and data corruption
Commonly implemented using locks, semaphores, or mutexes
Example: Using a mutex to protect a shared variable in a multi-threaded application
Implementing multithreading involves creating and managing multiple threads to execute tasks concurrently.
Identify the tasks that can be executed concurrently
Create and manage multiple threads to execute these tasks simultaneously
Use synchronization techniques like locks and semaphores to prevent race conditions
Handle communication and coordination between threads
Consider thread safety and resource sharing issues
I applied via Campus Placement and was interviewed in Jul 2024. There were 2 interview rounds.
70 Technical and Aptitude mcqs to solve in 50 minutes
Overloading is having multiple methods with the same name but different parameters. Overriding is implementing a method in a subclass that is already defined in the parent class.
Overloading allows a class to have multiple methods with the same name but different parameters.
Overriding occurs when a subclass provides a specific implementation of a method that is already provided by its parent class.
Overloading is resolve...
Primary key uniquely identifies a record in a table, while unique key ensures all values in a column are distinct.
Primary key does not allow NULL values, while unique key allows one NULL value.
A table can have only one primary key, but multiple unique keys.
Primary key is a combination of unique and not null constraints.
Primary key is used to establish relationships between tables, while unique key is used to enforce un
Different question were asked on sql python java
I applied via Campus Placement and was interviewed before Sep 2023. There were 2 interview rounds.
General aptitude test and coding test on some website
Recursively find the sum of digits in a given number
Create a recursive function that takes in a number as input
Base case: if the number is less than 10, return the number
Recursive case: return the last digit of the number added to the result of calling the function with the number divided by 10
Example: For input 123, the sum of digits would be 1 + 2 + 3 = 6
To find some of each level in a tree, traverse the tree level by level and sum the values at each level.
Traverse the tree level by level using BFS (Breadth First Search)
At each level, sum the values of the nodes
Store the sum of each level in an array of strings
Octro interview questions for popular designations
I applied via Campus Placement and was interviewed before Jan 2022. There were 4 interview rounds.
It was a time constraint exam with easy to hard questions in the questionnaire. There were multiple choice questions from English, Aptitude, Basic technical questions.
Top trending discussions
I applied via Campus Placement and was interviewed before Mar 2019. There were 5 interview rounds.
I applied via Referral and was interviewed before Nov 2023. There was 1 interview round.
Basic aptitude test, if you know basic maths you can easily crack it.
I applied via Referral and was interviewed in Aug 2022. There were 2 interview rounds.
There were 10 questions and we were given 30 mins to solve them , questions were medium to hard level mcq
I applied via Campus Placement and was interviewed in Mar 2023. There were 3 interview rounds.
Question based on Probability , Logic (Puzzles) , Statistics
Anova Test is used to compare means of three or more groups.
Anova stands for Analysis of Variance
It is used to determine if there is a significant difference between the means of three or more groups
It compares the variance within groups to the variance between groups
Real-time example: An Anova test can be used to compare the average salaries of employees in different departments of a company
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