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I applied via Walk-in and was interviewed in Sep 2022. There were 2 interview rounds.
To connect to a database, use a database driver and provide connection details.
Choose a database driver that is compatible with your database management system.
Provide the necessary connection details such as host, port, username, and password.
Use the driver's connect() method to establish a connection to the database.
Close the connection when done using the close() method.
MVC stands for Model-View-Controller, a design pattern used in Django to separate the application into three interconnected components.
Model represents the data and business logic of the application.
View handles the presentation layer and interacts with the user.
Controller acts as an intermediary between the Model and View, handling user input and updating the Model and View accordingly.
Django's implementation of MVC i...
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I applied via LinkedIn and was interviewed in May 2021. There were 3 interview rounds.
Garbage collection is an automatic memory management process.
It frees up memory that is no longer being used by the program.
It helps prevent memory leaks and crashes caused by running out of memory.
Examples of languages that use garbage collection are Java, Python, and Ruby.
I appeared for an interview in Oct 2020.
Round duration - 180 Minutes
Round difficulty - Medium
1 CODING ROUND CONSISTING OF 2 CODING QUESTIONS.
1 MCQ ROUND CONTAINING TECHNICAL AND APTITUDE QUESTIONS.
Ninja, a boy from Ninjaland, receives 1 coin every morning from his mother. He wants to purchase exactly 'N' candies. Each candy usually costs 2 coins, but it is available for 1 ...
Calculate the earliest day on which Ninja can buy all candies with special offers.
Iterate through each day and check if any special offer is available for candies Ninja wants to buy
Keep track of the minimum day on which Ninja can buy all candies
Consider both regular price and sale price of candies
Given an input string S
and two characters 'c1' and 'c2', your task is to replace every occurrence of the character 'c1' with the character 'c2' in the given string.
Replace every occurrence of a character in a string with another character.
Iterate through the input string and replace 'c1' with 'c2' using string manipulation functions.
Return the updated string as the output.
Round duration - 15 Minutes
Round difficulty - Easy
HR round
Tip 1 : CLEAR YOUR BASICS.
Tip 2 : PRACTICE BASIC CODING QUESTIONS
Tip 3 : BE CLEAR ON YOUR PROJECTS
Tip 1 : HAVE INTERNSHIPS
Tip 2 : HAVE PROJECTS(ATLEAST 1)
I applied via Recruitment Consultant and was interviewed in Aug 2021. There was 1 interview round.
I applied via Naukri.com and was interviewed in Sep 2020. There was 1 interview round.
I appeared for an interview before Sep 2020.
Round duration - 60 minutes
Round difficulty - Easy
Round duration - 50 minutes
Round difficulty - Easy
Round duration - 60 minutes
Round difficulty - Easy
At the beginning of this round, the interviewer asked me about the data structures I knew. Linked lists, trees, graphs, arrays etc. was my answer. He asked me how well I knew Dynamic Programming. I said I wasn’t strong in that and he said that he would ask me a question on dynamic programming for sure.
Round duration - 40 minutes
Round difficulty - Easy
The interviewer asked me if I was comfortable with the interview process so far and how the previous interviews were. I said it was good and he gave me the first problem to solve.
Round duration - 60 minutes
Round difficulty - Easy
The interviewer asked me some Computer Science fundamentals in this round as well as some behavioural questions.
Implement a Trie data structure with insert and search functions.
Create a TrieNode class with children and isEndOfWord attributes.
Implement insert function to add words by iterating through characters.
Implement search function to check if a word exists by traversing the Trie.
Example: Insert 'apple', 'banana', 'orange' and search for 'apple' and 'grape'.
Do lot of hard work and practice of Data Structures and Algorithms based questions. I personally recommend you Coding Ninjas and Geeks For Geeks for interview preparation.
Application resume tips for other job seekersMake your resume short and try to make it of one page only and do mention all your skills which you are confident of in your resume.
Final outcome of the interviewSelectedI appeared for an interview before May 2021.
Round duration - 90 minutes
Round difficulty - Medium
Around 65-70 people sat for the test. 15 people were shortlisted. It consisted of the following to be done in 90 minutes.
- 28 MCQs based on core CS
- 2 Coding questions – everyone had different and random questions. Most questions were custom logic based (easy level) including some standard questions – LCS, LIS, topological sort.
Round duration - 60 minutes
Round difficulty - Easy
Interviewer was very friendly. It started with the standard – tell me about yourself / introduce yourself type of question. Then he proceeded and asked two coding questions
Your friend has homework to complete. Help him by removing duplicates from a sorted linked list.
You are given the 'Head' of a sorted linked list. Modify the l...
Remove duplicates from a sorted linked list without adjacent duplicates.
Traverse the linked list while comparing current and next nodes.
If they are equal, skip the next node by updating the current node's next pointer.
Repeat until the end of the list is reached.
You are enrolled as a student and must complete N
courses, numbered from 1 to N, to earn your degree.
Some courses have prerequisites, which means that to take course i
,...
Check if it is feasible to complete all courses with prerequisites.
Create a graph representing the prerequisites with courses as nodes and edges as prerequisites.
Perform a topological sort on the graph to check if there is a cycle (if there is, then it's not feasible to complete all courses).
If there is no cycle, then it is feasible to complete all courses.
Round duration - 60 minutes
Round difficulty - Medium
This round had only 1 question. The interviewer introduced himself. And he advised me to clearly understand the problem before proceeding.
You are given a binary tree of distinct integers, along with two nodes, ‘X’ and ‘Y’. Your task is to determine the Lowest Common Ancestor (LCA) of ‘X’ and ‘Y’.
The LC...
Find the Lowest Common Ancestor of two nodes in a binary tree.
Traverse the binary tree to find the paths from the root to nodes X and Y.
Compare the paths to find the last common node, which is the Lowest Common Ancestor.
Implement a recursive function to efficiently find the LCA.
Handle cases where one node is an ancestor of the other.
Consider edge cases like when X or Y is the root node.
Round duration - 60 minutes
Round difficulty - Medium
Pretty Good Round. Fast Paced. We covered a lot of ground.
Design and implement a class BSTIterator
to perform an in-order traversal over a Binary Search Tree (BST). Your implementation should include the following me...
Design and implement a class BSTIterator to perform in-order traversal over a Binary Search Tree (BST).
Implement a parameterized constructor to initialize the iterator with the root of the BST.
Implement a method 'next()' to return the next smallest element in in-order traversal.
Implement a method 'hasNext()' to check if there exists a next smallest element in traversal.
Ensure the output is the in-order traversal of the
Given a binary array 'ARR' of size 'N', your task is to determine the maximum length of a sequence consisting solely of 1’s that can be obtained by converting at...
Find the maximum length of a sequence of 1's by converting at most K zeroes into ones in a binary array.
Iterate through the array and keep track of the current window of 1's and zeroes.
Use a sliding window approach to find the maximum length of consecutive 1's by flipping at most K zeroes.
Update the window based on the number of zeroes flipped and keep track of the maximum length found so far.
Return the maximum length ...
You are given an undirected and disconnected graph G(V, E)
having V
vertices numbered from 0
to V-1
and E
edges. Your task is to print its BFS traversal starting from the 0t...
BFS traversal of an undirected and disconnected graph starting from vertex 0.
Start BFS traversal from vertex 0 and visit all connected nodes in sorted order.
Use a queue to keep track of nodes to visit next.
Keep a visited array to avoid revisiting nodes.
Print the BFS traversal path as the nodes are visited.
Example: For input V=5, E=4 and edges 0-1, 0-2, 1-3, 2-4, the BFS traversal will be [0, 1, 2, 3, 4].
Given an undirected graph with V
vertices (labeled 0, 1, ..., V-1) and E
edges, each edge connects two nodes X
and Y
with a specified weight representing the dis...
Dijkstra's algorithm is used to find the shortest path distance from a source node to all other nodes in an undirected graph.
Implement Dijkstra's algorithm to find the shortest path distance from node 0 to all other nodes in the graph.
Use a priority queue to efficiently select the next node with the shortest distance.
Initialize distances to all nodes as infinity, except for the source node which is 0.
Update distances t...
Round duration - 60 minutes
Round difficulty - Hard
Bar Raised Round. Definitely felt the difficulty.
You are given a string consisting of English alphabet characters. Your task is to identify and return the first character in the string that does not repeat...
Identify and return the first non-repeating character in a string, or the first character if all characters repeat.
Iterate through the string to count the frequency of each character
Iterate through the string again to find the first character with frequency 1
If no such character is found, return the first character of the string
Tip 1 : Practice at least 250 Questions, Give yourself enough time for preparation. Cramming won't take you very far. In books, I really liked Elements of Programming Interviews.
Tip 2 : Make sure to brush up your basics - coding style, OOPs, Language features. They help in making an impression.
Tip 3 : Don't worry about solving the question in the interview. Learn to tackle any random problem with the best of your ability. More often than not, that'd be enough.
Tip 1 : Keep your resume clean - no graphics, no multiple fonts. Keep it one page.
Tip 2 : Don't go over board in mentioning skills, only mention the things you are truly confident about.
I applied via Walk-in and was interviewed in Jan 2020. There were 3 interview rounds.
Basic structure of an HTML page includes doctype declaration, html, head, and body tags.
DOCTYPE declaration specifies the HTML version
HTML tag wraps the entire content of the page
Head tag contains meta information, title, and links to external resources
Body tag contains the visible content of the page
Padding is the space inside an element, while margin is the space outside an element.
Padding is used to create space between an element's content and its border.
Margin is used to create space between an element's border and the adjacent elements.
Padding is affected by the background color of the element, while margin is not.
Padding can be set individually for each side of an element (top, right, bottom, left), while ma...
Box Model is a concept in CSS where every element is treated as a box with content, padding, border, and margin.
Box Model consists of content, padding, border, and margin.
Content is the actual content of the box.
Padding is the space between the content and the border.
Border is the line that goes around the padding and content.
Margin is the space outside the border.
Directives in Angular are markers on DOM elements that tell Angular to attach a specified behavior to that element.
There are three types of directives in Angular: Component, Structural, and Attribute.
Component directives are used to create reusable UI components.
Structural directives are used to change the structure of the DOM.
Attribute directives are used to change the appearance or behavior of an element.
Examples of ...
JIT compiles code at runtime while AOT compiles code before runtime.
JIT stands for Just-In-Time compilation and compiles code at runtime.
AOT stands for Ahead-Of-Time compilation and compiles code before runtime.
JIT is used in Java Virtual Machine (JVM) while AOT is used in languages like C and C++.
JIT can result in slower startup time but faster execution while AOT can result in faster startup time but slower execution...
I applied via Job Portal and was interviewed before Apr 2021. There was 1 interview round.
Solid principles are a set of design principles for writing maintainable and scalable code in C#.
Single Responsibility Principle (SRP) - a class should have only one reason to change
Open/Closed Principle (OCP) - a class should be open for extension but closed for modification
Liskov Substitution Principle (LSP) - derived classes should be substitutable for their base classes
Interface Segregation Principle (ISP) - client...
based on 1 interview
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