Citicorp Business Technology Analyst Interview Questions and Answers

Round duration - 60 minutes
Round difficulty - Easy

This was a technical round with questions based on OOPS Concepts.

Q1. What are the types of polymorphism in Object-Oriented Programming?
Ans. 
Types of polymorphism in OOP include compile-time polymorphism (method overloading) and runtime polymorphism (method overriding).
• Compile-time polymorphism: achieved through method overloading, where multiple methods have the same name but different parameters.

• Runtime polymorphism: achieved through method overriding, where a subclass provides a specific implementation of a method defined in its superclass.

• Example: Compi...read more
Answered by AI
Add your answer
Q2. What is function overloading?
Ans. 
Function overloading is when multiple functions have the same name but different parameters or return types.
• Function overloading allows multiple functions with the same name to be defined in a class or namespace.

• The functions must have different parameters or return types to be considered overloaded.

• Example: void print(int num) and void print(string text) are overloaded functions with the same name 'print'.
Answered by AI
Add your answer
Q3. What is a virtual function?
Ans. 
A virtual function is a function in a base class that is declared using the keyword 'virtual' and can be overridden by a function in a derived class.
• Virtual functions allow for dynamic polymorphism in object-oriented programming.

• They are used to achieve runtime binding and enable the implementation of the concept of function overriding.

• Virtual functions are typically used in inheritance hierarchies to provide a common ...read more
Answered by AI
Add your answer
Q4. What are templates in C++?
Ans. 
Templates in C++ are a feature that allows for generic programming by creating reusable code.
• Templates allow for writing generic functions or classes that can work with any data type.

• Templates are defined using the 'template' keyword followed by the template parameter list.

• Example: template <class T> T add(T a, T b) { return a + b; }
Answered by AI
Add your answer
Q5. What is a null pointer?
Ans. 
A null pointer is a pointer that does not point to any memory location.
• A null pointer is typically used to indicate that the pointer does not have a valid target.

• Dereferencing a null pointer can lead to a segmentation fault or program crash.

• In C/C++, a null pointer is represented by the value 0 or nullptr.

• Null pointers are commonly used in programming to represent the absence of a valid pointer.
Answered by AI
Add your answer

Round duration - 60 minutes
Round difficulty - Easy

Technical round with OOPS based questions mainly.

Q1. What is a dangling pointer in C?
Ans. 
A dangling pointer in C is a pointer that points to a memory location that has been deallocated, leading to potential crashes or undefined behavior.
• Dangling pointers occur when memory is deallocated but the pointer is not updated or set to NULL.

• Accessing a dangling pointer can result in reading or writing to invalid memory locations.

• Example: int *ptr = malloc(sizeof(int)); free(ptr); *ptr = 10; // Accessing a dangling
Answered by AI
Add your answer
Q2. What is a V-table?
Ans. 
A V-table is a data structure used in object-oriented programming to store virtual functions for dynamic binding.
• V-table stands for virtual table.

• It is used in object-oriented programming languages like C++ to implement polymorphism.

• Each class with virtual functions has its own V-table.

• V-table contains pointers to the virtual functions of the class.
Answered by AI
Add your answer
Q3. 
Convert Min Heap to Max Heap Problem Statement
Given an array representation of a min-heap of size 'n', your task is to convert this array into a max-heap.
Input:
The first line of input contains an int...read more
Ans. 
Convert a given min-heap array into a max-heap array.
• Iterate through the given min-heap array and build a max-heap array by swapping elements.

• Start from the last non-leaf node and heapify down to maintain the max-heap property.

• Ensure that the output array satisfies the max-heap property.

• Example: For min-heap [1,2,3,6,7,8], the max-heap would be [8,7,3,6,2,1].
Answered by AI
Add your answer

Round duration - 30 minutes
Round difficulty - Easy

This was management interview round. Make sure you know everything on your resume. Most questions are based on your resume.

Q1. Be well prepared for technical round as this will be a make or break for you
Add your answer

Round duration - 90 minutes
Round difficulty - Medium

It was a cumulative test

Q1. 
Trapping Rainwater Problem Statement
You are given an array ARR of long type, which represents an elevation map where ARR[i] denotes the elevation of the ith bar. Calculate the total amount of rainwater t...read more
Ans. 
Calculate the total amount of rainwater that can be trapped within given elevation map.
• Iterate through the array to find the maximum height on the left and right of each bar.

• Calculate the amount of water that can be trapped above each bar by taking the minimum of the maximum heights on the left and right.

• Sum up the trapped water above each bar to get the total trapped water for the elevation map.
Answered by AI
Add your answer

Round duration - 90 minutes
Round difficulty - Medium

It was sophisticated in nature and a good brain buster.

Q1. 
Candies Distribution Problem Statement
Prateek is a kindergarten teacher with a mission to distribute candies to students based on their performance. Each student must get at least one candy, and if two s...read more
Ans. 
Determine the minimum number of candies needed to distribute to students based on their performance and ratings.
• Iterate through the array of student ratings and assign 1 candy to each student initially.

• Then iterate from left to right and check if the current student's rating is higher than the previous student, if so, assign candies accordingly.

• Similarly, iterate from right to left to handle cases where the current stu...read more
Answered by AI
Add your answer

Round duration - 1 hour
Round difficulty - Medium

Q1. DBMS
It revolved around basic concepts
Ans. 
DBMS is a software system that manages databases and allows users to interact with data stored in them.
• DBMS stands for Database Management System

• It helps in creating, updating, and managing databases

• Examples of DBMS include MySQL, Oracle, SQL Server

• It ensures data integrity, security, and efficient retrieval
Answered by AI
Add your answer

Round duration - 70 minutes
Round difficulty - Hard

It was a great experience

Q1. What are the types of derivatives?
Ans. 
Derivatives are financial instruments that derive their value from an underlying asset or security.
• Types of derivatives include futures, options, swaps, and forwards.

• Futures are contracts to buy or sell an asset at a predetermined price and date.

• Options give the buyer the right, but not the obligation, to buy or sell an asset at a predetermined price and date.

• Swaps involve exchanging cash flows based on different finan...read more
Answered by AI
Add your answer