ECOS (I) MOBILITY & HOSPITALITY Senior Executive Operations Interview Questions and Answers

The function checks if a string is a substring of another string.

• Use the built-in string methods like 'indexOf' or 'includes' to check for substring.

• If the language supports regular expressions, you can also use them to find substrings.

• Consider the case sensitivity of the strings when comparing.

Code to multiply two matrices of dimension M*N and N*K.

• Create a result matrix of dimension M*K.

• Iterate through each row of the first matrix.

• For each row, iterate through each column of the second matrix.

• For each element in the row of the first matrix, multiply it with the corresponding element in the column of the second matrix.

• Sum up the products and store the result in the corresponding position of the result matrix.

• ...read more

SQL query to perform matrix multiplication using two tables with row, col, and value columns.

• Use JOIN operation to combine the two tables based on matching row and col values.

• Use GROUP BY clause to group the result by row and col values.

• Use SUM function to calculate the dot product of corresponding row and col values.

• Use INSERT INTO statement to insert the result into a new table.

Prototype in JavaScript is an object that is associated with every function and object by default.

• Prototype is used to add properties and methods to an object.

• It allows objects to inherit properties and methods from other objects.

• Modifying the prototype of a function affects all instances of that function.

• Prototypes can be used to create new objects based on existing objects.

• The prototype chain allows for property and

Classes in JavaScript are written using the class keyword.

• Use the class keyword followed by the class name to define a class.

• Use the constructor method to initialize class properties.

• Add methods to the class using the class prototype.

• Use the new keyword to create an instance of the class.

The number of different ways to climb a ladder of N steps by taking 1 or 2 steps at a time.

• This is a classic problem that can be solved using dynamic programming.

• The number of ways to climb N steps is equal to the sum of the number of ways to climb N-1 steps and N-2 steps.

• The base cases are when N is 0 or 1, where there is only 1 way to climb the ladder.

• For example, for N=4, there are 5 different ways: [1, 1, 1, 1], [1

Print a square matrix in spiral order

• Start by defining the boundaries of the matrix

• Iterate through the matrix in a spiral pattern, printing each element

• Adjust the boundaries after each iteration to move inward

• Repeat until all elements are printed

Retrieve the second highest marks obtained by each student from a table with student name, subject, and marks.

• Use the RANK() function to assign a rank to each row based on the marks in descending order.

• Filter the result to only include rows with rank 2 for each student.

• Group the result by student name to get the second highest marks for each student.

The .live() method attaches an event handler to the current and future elements, while .delegate() attaches an event handler to a parent element.

• The .live() method is deprecated in newer versions of jQuery.

• The .delegate() method is preferred over .live() for performance reasons.

• Both methods are used to handle events for dynamically added elements.

• Example: $(document).live('click', 'button', function() { ... });

• Example:...read more

Chaining in jQuery allows multiple methods to be called on a single element in a single line of code.

• Chaining simplifies code and improves readability.

• Each method in the chain operates on the result of the previous method.

• The chain ends with a method that does not return a jQuery object.

• Example: $('div').addClass('highlight').fadeOut();

A callback function is a function that is passed as an argument to another function and is executed later.

• Callback functions are commonly used in event-driven programming.

• They allow asynchronous execution of code.

• Callback functions can be used to handle responses from APIs or user interactions.

• They can be anonymous functions or named functions.

• Example: setTimeout(function() { console.log('Hello!'); }, 1000);

The .bind() function in jQuery is used to attach an event handler function to one or more elements.

• It allows you to specify the event type and the function to be executed when the event occurs.

• The .bind() function can be used to bind multiple events to the same element.

• It can also be used to pass additional data to the event handler function.

• The .bind() function is deprecated in jQuery version 3.0 and above. It is reco

The angle between the hour and minute hands of a clock can be calculated using a formula.

• The hour hand moves 30 degrees per hour and 0.5 degrees per minute.

• The minute hand moves 6 degrees per minute.

• Calculate the angle between the two hands using the formula: |30H - 11M/2|, where H is the hour and M is the minute.

Yes, it is possible to create a slideshow without using JavaScript.

• Use CSS animations and transitions to create the slideshow.

• Use HTML and CSS to structure and style the slideshow.

• Utilize keyframe animations to create the slide transitions.

• Use radio buttons or checkboxes to control the slideshow navigation.

• Apply the :target pseudo-class to create a simple slideshow without JavaScript.

The men can take turns riding the scooter, allowing them to reach point B faster.

• The men can form a queue and take turns riding the scooter.

• The person riding the scooter can drop it off at a certain point and the next person can pick it up.

• The scooter can be passed along the line of men until everyone reaches point B.

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...read more

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...read more

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...read more

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...read more

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...read more

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...read more

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 am a dedicated professional with experience in management. I want to work in Oyo for its innovative approach to hospitality. Life in Bangalore is vibrant and diverse.

• I have a strong background in management and leadership roles

• I am attracted to Oyo for its innovative technology-driven approach to hospitality

• Bangalore offers a vibrant cultural scene with diverse food options and entertainment

• The city is known for its