10+ ICICI Bank Interview Questions and Answers

Program to split two strings into an array of strings

• Use the split() method to split the strings

• Specify the delimiter to split the strings

• Store the split strings in an array

this() is used in Java to call a constructor of the same class.

• this() can be used to call a constructor with default arguments.

• It can also be used to call a constructor with specific arguments.

• this() must be the first statement in a constructor.

• It can only be used inside a constructor.

• Example: public MyClass(int x) { this(x, 0); }

• Example: public MyClass(int x, int y) { this.x = x; this.y = y; }

Object-oriented programming concepts including encapsulation, inheritance, polymorphism, and abstraction.

• Encapsulation: bundling data and methods that operate on that data within a single unit

• Inheritance: creating new classes from existing ones, inheriting their properties and methods

• Polymorphism: ability of objects to take on multiple forms, often achieved through method overriding

• Abstraction: hiding implementation details and only exposing necessary information to users

Call by reference passes the address of the variable while call by value passes the value itself.

• Call by reference allows the function to modify the original variable

• Call by value creates a copy of the variable for the function to use

• Call by reference is more memory efficient for large data types

• Call by value is safer as it prevents unintended changes to the original variable

Garbage collection is an automatic memory management process in Java.

• Garbage collection frees up memory by removing objects that are no longer in use.

• Java uses a mark-and-sweep algorithm to identify and remove unused objects.

• The System.gc() method can be used to suggest garbage collection, but it is not guaranteed to run immediately.

• Garbage collection can impact performance, so it is important to optimize code to minimize unnecessary object creation.

Git is a version control system used for tracking changes in code and collaborating with others.

• Git allows for branching and merging of code

• It tracks changes made to code over time

• It allows for collaboration with others on the same codebase

• Git can be used for both personal and professional projects

Structures and unions are used to group related data members in a program.

• Structures are used to group related data members of different data types.

• Unions are used to group related data members of the same data type.

• Structures allocate memory for each data member, while unions allocate memory for the largest data member.

• Structures are used when all data members need to be accessed separately, while unions are used when only one data member needs to be accessed at a time.

Call by reference and call by value are two ways of passing arguments to a function.

• Call by value passes a copy of the argument to the function, while call by reference passes a reference to the original argument.

• In call by value, changes made to the argument inside the function do not affect the original value, while in call by reference, changes made to the argument inside the function affect the original value.

• Call by value is used for simple data types like integers and f...read more

To delete a file in Python, use the os.remove() method.

• Import the os module

• Use os.remove() method to delete the file

• Specify the file path as the argument to os.remove() method

Pointers are variables that store memory addresses of other variables.

• Pointers allow direct access to memory locations.

• They can be used to pass values between functions.

• Pointers can be used to create dynamic data structures.

• Example: int *ptr; ptr = # *ptr = 10;

• Example: void swap(int *a, int *b) { int temp = *a; *a = *b; *b = temp; }

Arrays are a collection of similar data types stored in contiguous memory locations.

• Arrays can be of any data type, including integers, floats, characters, and objects.

• Arrays are accessed using an index starting from 0.

• Arrays can be one-dimensional, two-dimensional, or multi-dimensional.

• Example: int arr[5] = {1, 2, 3, 4, 5};

• Example: char str[6] = {'H', 'e', 'l', 'l', 'o', '\0'};

Pointers are variables that store memory addresses. They are used to manipulate data and create dynamic data structures.

• Pointers are used to pass memory addresses as arguments to functions

• They can be used to dynamically allocate memory

• Pointers can be used to create linked lists and trees

• They can also be used to access hardware directly

• Null pointers are used to indicate that a pointer does not point to a valid memory address

Storage specifiers are keywords used in programming languages to define the scope and lifetime of variables.

• Storage specifiers determine where a variable is stored in memory and how long it will exist.

• Examples of storage specifiers include 'static', 'auto', 'register', and 'extern'.

• Static variables have a lifetime that lasts for the entire program execution, while auto variables have a lifetime that lasts only within the block in which they are defined.

• Register variables are ...read more