50+ ENO Interview Questions and Answers

The task is to print a specific pattern based on the given number of rows, 'N'.

• Iterate through each row and print the numbers in the specified pattern

• Start with the first row, then move to the next row in a spiral pattern

• Ensure there is exactly one space between each value in a row

Given a string of consecutive nonnegative integers with one missing number, find the missing integer.

• Iterate through all possible substrings and check if they form a valid sequence of consecutive integers.

• If a valid sequence is found, return the missing number.

• Handle cases where there are multiple missing numbers, all numbers are present, or the string is invalid.

• Consider the constraints provided to optimize the solution.

• Example: For input '1113', the missing number is 12.

Calculate the smallest angle between the hour and minute hands of a clock for a given time.

• Calculate the angles formed by the hour and minute hands separately

• Find the absolute difference between the two angles

• Return the smaller angle as the result

To find the missing number in an array of 1 to 10 numbers, calculate the sum of all numbers and subtract the sum of the given array.

• Calculate the sum of numbers from 1 to 10 using the formula n * (n + 1) / 2

• Calculate the sum of the given array

• Subtract the sum of the given array from the sum of numbers from 1 to 10

• The result will be the missing number

Encapsulation is the bundling of data and methods into a single unit. Data hiding is the concept of restricting access to data. Abstraction is the process of simplifying complex systems.

• Encapsulation combines data and methods into a single unit, providing better control and security.

• Data hiding restricts access to data, allowing only specific methods to manipulate it.

• Abstraction simplifies complex systems by providing a high-level view, hiding unnecessary details.

• Example: A c...read more

Explanation of abstract, final, and static classes and inheritance in Java.

• Abstract classes are classes that cannot be instantiated and are meant to be extended by other classes.

• Final classes are classes that cannot be extended by other classes.

• Static classes are nested classes that can be accessed without creating an instance of the outer class.

• Static classes are different from non-static classes in that they cannot access non-static members of the outer class.

• Inheritance is...read more

Types of keys in a DBMS include primary key, foreign key, candidate key, and super key.

• Primary key uniquely identifies each record in a table (e.g. employee ID)

• Foreign key links two tables together (e.g. department ID in employee table)

• Candidate key is a unique key that can be chosen as the primary key (e.g. email address)

• Super key is a set of attributes that uniquely identifies a record (e.g. combination of first name and last name)

The roles offered at Credit Suisse for IITM students vary in terms of responsibilities and focus areas.

• The roles may differ in terms of the department or division within Credit Suisse.

• Some roles may be more focused on technology and software development, while others may be more finance-oriented.

• Different roles may have varying levels of client interaction or require different skill sets.

• Examples of roles offered may include software engineer, financial analyst, risk manageme...read more

My ability to empathize with others sets me apart from others.

• I have a natural ability to understand and relate to people's emotions.

• I am able to put myself in other people's shoes and see things from their perspective.

• This quality helps me to build strong relationships with others and resolve conflicts effectively.

• For example, in my previous job, I was able to diffuse a tense situation between two coworkers by listening to both sides and finding a common ground.

• I believe tha...read more

If my account balance was multiplied by a million, I would invest in various areas, donate to charities, and fulfill my dreams.

• Invest in stocks, real estate, and businesses to grow wealth

• Donate to charities and support causes that are important to me

• Travel the world and experience different cultures

• Buy a dream house and a luxury car

• Invest in my education and personal development

Mapping an ER diagram to a relational schema involves identifying entities, attributes, relationships, and keys.

• Identify entities in the ER diagram and map them to tables in the relational schema.

• Identify attributes of each entity and map them to columns in the corresponding tables.

• Identify relationships between entities and represent them using foreign keys in the tables.

• Identify keys (primary and foreign) to maintain data integrity and relationships between tables.

Design a lift with features like quick response time, spacious interior, clear signage, and emergency communication.

• Ensure quick response time for minimal waiting

• Provide a spacious interior for comfort and ease of movement

• Include clear signage for easy navigation

• Install emergency communication system for safety

WCF services provide advantages such as interoperability, security, reliability, and flexibility.

• Interoperability: WCF allows communication between different platforms and technologies.

• Security: WCF supports various security mechanisms like message encryption and authentication.

• Reliability: WCF ensures reliable message delivery through features like reliable messaging.

• Flexibility: WCF supports multiple communication protocols and message formats.

• Example: WCF can be used to cr...read more

Static methods belong to the class itself, while non-static methods belong to instances of the class.

• Static methods can be called without creating an instance of the class.

• Non-static methods can only be called on an instance of the class.

• Static methods cannot access non-static variables or methods directly.

• Non-static methods can access both static and non-static variables and methods.

• Example: Math.sqrt() is a static method, while String.length() is a non-static method.

Yes, I have taken a course on functional programming on Coursera.

• I have completed the course 'Functional Programming Principles in Scala' on Coursera.

• The course covered topics such as higher-order functions, recursion, and immutable data structures.

• I gained a solid understanding of functional programming concepts and how to apply them in practice.

• I also completed programming assignments and quizzes to reinforce my learning.

The egg will crack if thrown from any floor above the ground floor.

• The egg will crack due to the impact with the ground.

• The height of the building does not affect the cracking of the egg.

• Therefore, the egg will crack if thrown from any floor above the ground floor.

Procedural programming focuses on procedures and functions, while Object-Oriented Programming focuses on objects and classes.

• Procedural programming uses a top-down approach, breaking down tasks into smaller procedures/functions.

• Object-Oriented Programming uses objects that contain data and methods to manipulate that data.

• In procedural programming, data and functions are separate entities, while in OOP, they are encapsulated within objects.

• OOP promotes reusability and modulari...read more

Operator overloading is a feature in programming languages that allows operators to have different behaviors depending on the types of operands.

• Operator overloading enables the use of operators with custom types.

• It allows the same operator to perform different operations based on the types of operands.

• In languages like C++, you can define how operators like +, -, *, etc. work with user-defined types.

• Pseudo code example: class Vector { int x, y; Vector operator+(Vector v) { re...read more

There is no definitive answer as to which sorting technique is better, as it depends on the specific requirements and constraints of the problem.

• The choice of sorting technique depends on factors such as the size of the data set, the distribution of the data, and the available resources.

• Some commonly used sorting techniques include bubble sort, insertion sort, selection sort, merge sort, quicksort, and heapsort.

• Bubble sort is simple but inefficient for large data sets, while ...read more

Sort an array of size million containing values 0-9.

• Use counting sort algorithm for efficient sorting

• Create a count array to store the count of each element

• Modify the count array to store the actual position of each element

• Iterate through the input array and place each element in its correct position

• Time complexity: O(n+k), where n is the size of the input array and k is the range of input values

Yes, functional programming is a programming paradigm that treats computation as the evaluation of mathematical functions.

• Functional programming focuses on immutability and pure functions.

• It avoids changing state and mutable data.

• Higher-order functions and recursion are commonly used in functional programming.

• Examples of functional programming languages include Haskell, Lisp, and Scala.

Seclending is a process of lending securities for a short period of time in exchange for collateral.

• Seclending involves borrowing and lending of securities.

• The borrower provides collateral to the lender in exchange for the securities.

• The borrower pays a fee to the lender for the use of the securities.

• Repurchase agreement involves the sale of securities with an agreement to repurchase them at a later date.

• Reverse repurchase agreement involves the purchase of securities with an...read more

I have a unique perspective on problem-solving.

• I approach problems from different angles, considering multiple solutions.

• I am not afraid to think outside the box and challenge conventional wisdom.

• I have a track record of coming up with innovative solutions.

• For example, in a group project, while everyone was focused on a single approach, I suggested an alternative method that turned out to be more efficient and successful.

Different types of indexing in DBMS include primary, secondary, clustered, non-clustered, unique, and composite indexing.

• Primary indexing: Index based on the primary key of a table.

• Secondary indexing: Index based on a non-primary key column.

• Clustered indexing: Physically rearranges the table's rows based on the indexed column.

• Non-clustered indexing: Creates a separate structure for the index.

• Unique indexing: Ensures that no two rows have the same indexed value.

• Composite index...read more

Use C# to connect to a SQL Server backend or database.

• Use SqlConnection class to establish a connection to the SQL Server.

• Use SqlCommand class to execute SQL queries.

• Handle exceptions using try-catch blocks.

• Remember to close the connection after use.

Procedural programming focuses on procedures and functions, while object-oriented programming focuses on objects and their interactions.

• Procedural programming is based on a step-by-step procedure or set of instructions.

• Object-oriented programming is based on the concept of objects, which encapsulate data and behavior.

• Procedural programming is more focused on the algorithmic approach.

• Object-oriented programming promotes code reusability and modularity.

• In procedural programming...read more

Linked List is a data structure in Java that stores a sequence of elements with pointers to the next element.

• Each element in a Linked List is called a node and contains a value and a pointer to the next node.

• Linked Lists are dynamic and can grow or shrink in size during runtime.

• Insertion and deletion operations are efficient in Linked Lists compared to arrays.

• Traversal in a Linked List is slower compared to arrays as it requires following pointers.

• Java provides LinkedList cla...read more

Indices in relational databases are used to improve query performance by allowing faster data retrieval.

• Clustered index: Determines the physical order of data in a table.

• Non-clustered index: Creates a separate structure that contains a copy of the indexed columns and a pointer to the actual data.

• Unique index: Ensures that the indexed columns contain unique values.

• Composite index: Combines multiple columns into a single index.

• Covering index: Includes all the columns required b...read more