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I applied via Campus Placement
Cases related to reducing cost and optimizing the capacity utilization were asked.
Resume based and 2 cases related to Shuttl's operations and how analytics could improve it were asked.
Customers choose transport based on convenience, cost, and time. Shuttl can offer loyalty programs, personalized recommendations, and seamless booking experience.
Customers consider factors such as cost, convenience, time, and comfort when choosing between alternative modes of transport.
Shuttl can offer loyalty programs to incentivize customers to choose their service repeatedly.
Personalized recommendations based on the...
Revenue decline can be caused by various factors such as economic downturn, competition, pricing strategy, product quality, and customer satisfaction.
Analyze sales data to identify trends and patterns
Conduct market research to understand competition and customer preferences
Review pricing strategy and adjust if necessary
Evaluate product quality and make improvements if needed
Assess customer satisfaction and address any ...
Top trending discussions
I was interviewed before Feb 2021.
Round duration - 90 minutes
Round difficulty - Medium
Questions on aptitude, English, logical reasoning, C/C++ and 5 coding ques. (only pseudo code).
Bob and his wife are in the famous 'Arcade' mall in the city of Berland. This mall has a unique way of moving between shops using trampolines. Each shop is laid out in a st...
Find the minimum number of trampoline jumps Bob needs to make to reach the final shop, or return -1 if it's impossible.
Use Breadth First Search (BFS) algorithm to find the minimum number of jumps required.
Keep track of the visited shops to avoid revisiting them.
If a shop has an Arr value of 0, it is impossible to reach the final shop.
Return -1 if the final shop cannot be reached.
Given two strings, S
and X
, your task is to find the smallest substring in S
that contains all the characters present in X
.
S = "abdd", X = "bd"
Find the smallest substring in S that contains all characters in X.
Use a sliding window approach to find the smallest window in S containing all characters of X.
Maintain a hashmap to keep track of characters in X and their frequencies in the current window.
Slide the window to the right, updating the hashmap and shrinking the window until all characters in X are present.
Return the smallest window found.
Example: S = 'abd
You need to determine all possible paths for a rat starting at position (0, 0) in a square maze to reach its destination at (N-1, N-1). The maze is represented as an N*N ma...
Find all possible paths for a rat in a maze from start to destination.
Use backtracking to explore all possible paths in the maze.
Keep track of visited cells to avoid revisiting them.
Return paths in alphabetical order as a list of strings.
Round duration - 60 minutes
Round difficulty - Easy
Questions based on OOPS were asked in this round.
A virtual function is a function in a base class that is declared using the keyword 'virtual' and can be overridden by a function with the same signature in a derived class.
Virtual functions allow for dynamic polymorphism in C++
They are used in inheritance to achieve runtime polymorphism
Virtual functions are declared in a base class and can be overridden in derived classes
They are called based on the type of object bei...
Types of polymorphism in OOP include compile-time (method overloading) and runtime (method overriding) polymorphism.
Compile-time polymorphism is achieved through method overloading, where multiple methods have the same name but different parameters.
Runtime polymorphism is achieved through method overriding, where a subclass provides a specific implementation of a method that is already defined in its superclass.
Polymor...
Deep copy creates a new object and recursively copies all nested objects, while shallow copy creates a new object and copies only the references to nested objects.
Deep copy creates a new object and copies all nested objects, while shallow copy creates a new object and copies only the references to nested objects.
In deep copy, changes made to the original object do not affect the copied object, while in shallow copy, ch...
Round duration - 30 minutes
Round difficulty - Easy
HR round with typical behavioral problems.
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
I got to participate in a robotics competition at IIT
Designed and built a robot from scratch
Programmed the robot to complete tasks autonomously
Competed against other teams from different colleges
Learned valuable skills in engineering and teamwork
I chose IIT for its reputation and opportunities. No regrets. The environment is competitive and challenging.
IIT has a strong reputation for producing successful graduates
I was attracted to the opportunities for research and innovation
The academic environment is highly competitive and challenging
I have no regrets about my decision to attend IIT
A portfolio is a collection of investments. Risk can be measured through standard deviation, beta, or value at risk.
A portfolio is a combination of different investments such as stocks, bonds, and mutual funds.
The purpose of a portfolio is to diversify investments and reduce risk.
Risk can be measured through standard deviation, which measures the volatility of returns.
Beta measures the sensitivity of a portfolio to mar...
Beta is a measure of a stock's volatility. Value at risk is a statistical measure of potential losses. Formula for beta is Covariance(Stock, Market) / Variance(Market).
Beta measures a stock's sensitivity to market movements.
Value at risk is the maximum potential loss that an investment portfolio may suffer within a given time frame.
Beta formula is calculated by dividing the covariance of the stock and market returns by...
Covariance measures the relationship between two variables. It measures sensitivity by indicating the direction of the relationship.
Covariance is a statistical measure that shows how two variables are related to each other.
It measures the direction of the relationship between two variables.
A positive covariance indicates that the two variables move in the same direction.
A negative covariance indicates that the two vari...
WACC is the weighted average cost of capital. To value a company, one can use various methods such as DCF, comparables, or precedent transactions. A method to decide on project undertaking is NPV analysis.
WACC is the average cost of all the capital a company has raised
To value a company, one can use DCF, comparables, or precedent transactions
DCF involves projecting future cash flows and discounting them back to present...
I am impressed with the company's reputation and growth potential, and I believe my skills and experience align well with the job requirements.
I have researched the company and am impressed with its reputation and growth potential
I believe my skills and experience align well with the job requirements
I am excited about the opportunity to work with a talented team and contribute to the company's success
I have the necessary skills, experience, and passion to excel in this role.
I have a proven track record of success in similar roles.
I am a quick learner and adaptable to new situations.
I am passionate about this industry and eager to contribute to its growth.
I have excellent communication and teamwork skills.
I am committed to delivering high-quality work and exceeding expectations.
I would prioritize completing my current assignment and then discuss the transfer with my supervisor to ensure a smooth transition.
I would communicate with my supervisor to understand the urgency of the transfer
I would prioritize completing my current assignment to the best of my ability
I would discuss the transfer with my supervisor to ensure a smooth transition
I would try to complete as much work as possible before l...
A batsman can score a maximum of 264 runs in an ODI.
The maximum number of runs a batsman can score in an ODI is limited by the number of balls bowled and the number of boundaries hit.
The maximum number of balls bowled in an ODI is 300, assuming no extras are bowled.
If a batsman hits a boundary off every ball they face, they can score a maximum of 240 runs.
If a batsman hits sixes off every ball they face, they can score...
Solving two jug problems to obtain a specified amount of water using differently sized jugs.
Understand the capacity of each jug
Determine the amount of water needed
Fill one jug with water and pour it into the other jug
Repeat until the desired amount is reached
Use the remaining water in the larger jug to measure the remaining amount needed
Consider the possibility of multiple solutions
I was interviewed before Feb 2021.
Round duration - 65 minutes
Round difficulty - Easy
There were 2 sections –
Aptitude and Logical Reasoning and MCQ based on Java question ,C++, coding for 20 min and 45 min respectively.
Section A- Not very difficult to clear this round although less time was a problem.
Section B- It contains 15 multiple choice question on c/c++,java and 4 simple coding questions
Determine if a given singly linked list of integers forms a cycle or not.
A cycle in a linked list occurs when a node's next
points back to a previous node in the ...
Detect if a singly linked list forms a cycle by checking if a node's next pointer points back to a previous node.
Traverse the linked list using two pointers, one moving at double the speed of the other.
If the two pointers meet at any point, there is a cycle in the linked list.
Use Floyd's Cycle Detection Algorithm for O(N) time complexity and O(1) space complexity.
Round duration - 75 minutes
Round difficulty - Medium
It was an online coding test in which 3 coding question were given.
Given two strings, S
and X
, your task is to find the smallest substring in S
that contains all the characters present in X
.
S = "abdd", X = "bd"
Find the smallest substring in string S that contains all characters in string X.
Iterate through string S and keep track of characters in X found in a window
Use two pointers to maintain the window and slide it to find the smallest window
Return the smallest window containing all characters in X
Given a non-decreasing sorted array ARR
of N
positive numbers, determine the smallest positive integer that cannot be expressed as the sum of elements from...
Find the smallest positive integer that cannot be expressed as the sum of elements from any proper subset of a non-decreasing sorted array of positive numbers.
Start with the smallest possible integer that cannot be represented, which is 1.
Iterate through the array and update the smallest integer that cannot be represented.
If the current element is greater than the smallest integer that cannot be represented, return tha...
Given a square chessboard of size 'N x N', determine the minimum number of moves a Knight requires to reach a specified target position from its initial position...
Calculate the minimum number of moves a Knight needs to reach a target position on a chessboard.
Implement a function that takes knight's starting position, target position, and chessboard size as input
Use breadth-first search algorithm to find the shortest path for the Knight
Consider all possible 8 movements of the Knight on the chessboard
Return the minimum number of moves required for the Knight to reach the target po
Round duration - 60 minutes
Round difficulty - Easy
It started with a discussion on the programs given in coding round. They asked me about my interest field after that they directly jumped into Networking, Linux and Ethical Hacking part looking my interest domain. They asked me various question on networking and linux.
Then they asked me to code a simple c program
Given a singly linked list of integers, return the head of the reversed linked list.
Initial linked list: 1 -> 2 -> 3 -> 4 -> NULL
Reversed link...
Reverse a singly linked list of integers and return the head of the reversed linked list.
Iterate through the linked list and reverse the pointers to point to the previous node.
Keep track of the current, previous, and next nodes while reversing the linked list.
Update the head of the reversed linked list as the last node encountered during reversal.
FTP uses port number 21 and SMTP uses port number 25.
FTP uses port 21 for data transfer and port 20 for control information.
SMTP uses port 25 for email communication.
Understanding port numbers is important for network communication.
The OSI Model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven layers.
The OSI Model stands for Open Systems Interconnection Model.
It consists of seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Each layer has specific functions and communicates with the adjacent layers.
Example: Layer 1 (Physical) deals with physi...
To copy files in Linux, you can use the 'cp' command.
Use the 'cp' command followed by the source file and destination directory to copy a file.
To copy a directory and its contents, use the '-r' flag with the 'cp' command.
You can also use wildcards like '*' to copy multiple files at once.
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
I applied via Campus Placement and was interviewed in Dec 2016. There were 4 interview rounds.
Given a 2D matrix with doors and walls, fill distance matrix with minimum distance to the nearest door.
Iterate through the matrix and find the doors
Use Breadth-First Search (BFS) to calculate the minimum distance from each cell to the nearest door
Update the distance matrix with the minimum distances
Find kth smallest element in unordered array with O(1) space
Use the QuickSelect algorithm to partition the array and find the kth smallest element
Choose a pivot element and partition the array into two subarrays
Recursively partition the subarray that contains the kth smallest element
Repeat until the pivot element is the kth smallest element
Time complexity: O(n) average case, O(n^2) worst case
To find friends of friends who are not already friends with you, we can first find your friends and then their friends excluding yourself and your friends.
Get your list of friends
For each friend, get their list of friends
Exclude yourself and your friends from the final list of friends of friends
I was interviewed before Apr 2021.
Round duration - 60 minutes
Round difficulty - Medium
It started with an informal talk after he gave his introduction. We talked about the cyclone that was going to be there and what I did in my internship and my previous projects. Then we moved to questions. After solving both questions he asked if I had questions.
Given an array of distinct positive integers and a number 'K', your task is to find the K'th largest element in the array.
Array: [2,1,5,6,3,8], K ...
Find the Kth largest element in an array of distinct positive integers.
Sort the array in non-increasing order
Return the Kth element from the sorted array
Handle multiple test cases
Consider a grid containing oranges. Each cell in this grid can hold one of three integer values:
The task is to determine the minimum time required for all fresh oranges to become rotten in a grid.
Create a queue to store the rotten oranges and their time of rotting.
Iterate through the grid to find the initial rotten oranges and add them to the queue.
Perform BFS by popping each rotten orange from the queue, rot adjacent fresh oranges, and add them to the queue with updated time.
Continue until the queue is empty, ke...
Round duration - 45 minutes
Round difficulty - Easy
This was a design round.
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Find the subset of an array with the largest sum of continuous positive numbers.
Iterate through the array and keep track of the current sum and the maximum sum seen so far.
If the current element is positive, add it to the current sum. If it is negative, reset the current sum to 0.
Also keep track of the start and end indices of the maximum sum subset.
Return the subset using the start and end indices.
Find smallest substring in s1 containing all characters of s2.
Create a hash table of characters in s2
Use sliding window technique to find smallest substring in s1
Check if all characters in s2 are present in the substring
Update the smallest substring if a smaller one is found
Algorithm to reverse a linked list
Create a new empty linked list
Traverse the original linked list and insert each node at the beginning of the new list
Return the new list
Lazy loading is a technique used to defer the loading of non-critical resources until they are needed.
Advantages: faster initial page load, reduced bandwidth usage, improved user experience
Disadvantages: increased complexity, potential for slower subsequent page loads, difficulty with SEO
Examples: images, videos, and other media files can be loaded only when they are visible on the screen
Ajax is a technique for creating fast and dynamic web pages. AngularJS is a framework for building dynamic web applications, while jQuery is a library for simplifying HTML DOM traversal and manipulation.
Ajax stands for Asynchronous JavaScript and XML
It allows web pages to be updated asynchronously by exchanging data with a web server behind the scenes
AngularJS is a JavaScript framework that extends HTML with new attrib...
A traffic light system controls the flow of traffic at intersections.
The system consists of three lights: red, yellow, and green.
Each light has a specific duration for which it stays on.
The system also includes sensors to detect the presence of vehicles and pedestrians.
The duration of each light can be adjusted based on traffic patterns.
The system can be connected to a central control system for remote monitoring and m
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