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String Array manipulation
Different launch modes control how activities are launched, services run in the background, and intent-services handle asynchronous tasks.
Launch modes include standard, singleTop, singleTask, and singleInstance
Services are used for long-running operations in the background
Intent-services are used for handling asynchronous tasks on a separate worker thread
I applied via LinkedIn and was interviewed in Sep 2023. There were 2 interview rounds.
XGBoost is preferred over Random Forest due to its faster execution speed and better performance in complex datasets.
XGBoost is faster than Random Forest due to its optimized implementation of gradient boosting algorithm.
XGBoost generally performs better in complex datasets with high-dimensional features.
XGBoost allows for more fine-tuning of hyperparameters compared to Random Forest.
XGBoost has regularization techniqu...
I applied via Naukri.com and was interviewed before Oct 2023. There were 2 interview rounds.
Technical question on based of resume
Questionnaire given to solve
I applied via Naukri.com and was interviewed in Apr 2021. There were 3 interview rounds.
Digitas interview questions for popular designations
posted on 16 Aug 2015
Network layers are a hierarchical way of organizing communication protocols.
Network layers provide a modular approach to networking.
Each layer has a specific function and communicates with adjacent layers.
The OSI model has 7 layers, while the TCP/IP model has 4 layers.
Examples of layers include the physical layer, data link layer, network layer, transport layer, and application layer.
Deadlock is a situation where two or more processes are unable to proceed because they are waiting for each other to release resources.
Occurs in multi-threaded/multi-process environments
Can lead to system freeze or crash
Prevention techniques include resource ordering and timeouts
Example: Process A holds resource X and waits for resource Y, while Process B holds resource Y and waits for resource X
Paging and Segmentation are memory management techniques used by operating systems.
Paging divides memory into fixed-size pages and stores them in physical memory.
Segmentation divides memory into logical segments and stores them in physical memory.
Paging allows for efficient use of physical memory and reduces fragmentation.
Segmentation allows for protection and sharing of memory between processes.
Examples of operating s...
I am a software developer with experience in various programming languages and frameworks.
Proficient in Java, C++, and Python
Familiar with web development using HTML, CSS, and JavaScript
Experience with database management systems such as MySQL and MongoDB
Strong problem-solving and analytical skills
Worked on projects involving machine learning and artificial intelligence
Method overloading is having multiple methods with the same name but different parameters. Method overriding is having a subclass method with the same name and parameters as a superclass method.
Method overloading is used to provide different ways of calling the same method with different parameters.
Method overriding is used to provide a specific implementation of a method in a subclass that is already defined in the su...
Switch case is used for multiple conditions while if else is used for binary conditions.
Switch case is faster than if else for multiple conditions.
If else can handle complex conditions while switch case cannot.
Switch case can only compare values of the same data type.
If else can handle null values while switch case cannot.
Example: switch (day) { case 1: console.log('Monday'); break; case 2: console.log('Tuesday'); brea...
Interface and abstract class are both used for abstraction in object-oriented programming.
An interface is a collection of abstract methods that define a contract for a class to implement.
An abstract class is a class that cannot be instantiated and may contain abstract methods.
Interfaces are used to achieve multiple inheritance in Java.
Abstract classes can have non-abstract methods and instance variables.
An example of a...
Polymorphism is the ability of an object to take on many forms.
It allows objects of different classes to be treated as if they were objects of the same class.
It is achieved through method overriding and method overloading.
Example: A shape class can have multiple subclasses like circle, square, etc. and all can be treated as shapes.
Example: A method can have different implementations in different classes but with the sa
Inheritance is a mechanism in object-oriented programming where a new class is created by inheriting properties of an existing class.
Inheritance allows code reusability and saves time and effort in writing new code.
The existing class is called the parent or base class, and the new class is called the child or derived class.
The child class inherits all the properties and methods of the parent class and can also add its ...
Default case in switch case statement
Default case is executed when no other case matches the switch expression
It is optional and can be placed anywhere in the switch statement
It is often used to handle unexpected input or errors
It should always be the last case in the switch statement
I am a passionate software developer with a strong background in web development and a love for problem-solving.
Experienced in HTML, CSS, JavaScript, and various web development frameworks
Proficient in backend development using languages like Java, Python, and Node.js
Familiar with database management systems such as MySQL and MongoDB
Strong problem-solving skills and ability to work well in a team environment
I tend to get overly focused on details, which can sometimes slow down my progress.
I have a tendency to spend too much time on perfecting small details
I sometimes struggle with prioritizing tasks due to my focus on details
I am working on improving my time management skills to balance detail-oriented work with efficiency
Yes, I have received offers from two other companies.
Received offers from Company A and Company B
Currently evaluating all offers to make an informed decision
Considering factors like company culture, growth opportunities, and compensation
I would like to join Google because of their innovative projects and work culture.
Google is known for its cutting-edge technology and innovative projects.
They have a strong focus on employee well-being and work-life balance.
Google offers opportunities for career growth and development.
The company has a diverse and inclusive work culture.
Google is a leader in the tech industry with a global presence.
Yes, I have worked in multiple teams in various projects.
Worked in a team of developers to create a new software application
Collaborated with designers, testers, and project managers to meet project deadlines
Participated in daily stand-up meetings to discuss progress and roadblocks
Yes, they are similar.
All 8 metal balls are of the same material.
They have the same size and weight.
They have the same physical properties.
They are interchangeable in any given situation.
C is a procedural programming language while C++ is an object-oriented programming language.
C is a low-level language while C++ is a high-level language.
C++ supports object-oriented programming concepts like classes, inheritance, and polymorphism.
C++ has better support for exception handling and templates.
C++ is more complex than C and requires more memory.
C++ is used for developing applications like video games, while...
A class is a blueprint for creating objects that have similar attributes and behaviors.
Classes are used in object-oriented programming.
They define the properties and methods that objects of that class will have.
Objects are instances of a class.
Classes can inherit properties and methods from other classes.
Examples of classes include 'Person', 'Car', and 'Animal'.
An object is a self-contained entity that contains data and behavior.
An object is an instance of a class.
It has attributes (data) and methods (behavior).
Objects can interact with each other through their methods.
Examples include a car object with attributes like color and model, and methods like start and stop.
Another example is a person object with attributes like name and age, and methods like walk and talk.
A variable that is associated with a class rather than with instances of the class.
Static variables are declared using the static keyword.
They are initialized only once, at the start of the program execution.
They retain their value throughout the program's execution.
They can be accessed without creating an instance of the class.
Example: public static int count = 0;
Static variables have local scope but retain their value between function calls, while global variables have global scope.
Static variables are declared inside a function and retain their value between function calls
Global variables are declared outside of any function and can be accessed from any part of the program
Static variables have local scope, while global variables have global scope
Static variables are initializ...
Pointers are variables that store memory addresses of other variables.
Pointers allow for dynamic memory allocation and manipulation.
They are commonly used in programming languages like C and C++.
Example: int *ptr; // declares a pointer to an integer variable
Example: ptr = # // assigns the memory address of num to ptr
Example: *ptr = 5; // assigns the value 5 to the variable pointed to by ptr
Structures are arrangements of elements that form a framework or framework-like support.
Structures can be found in various fields such as engineering, architecture, and biology.
They can be made of different materials such as steel, wood, or bone.
Examples include bridges, buildings, and the skeletal system.
Structures can be designed to withstand different types of forces such as compression, tension, or bending.
A stack is a data structure that follows the Last In First Out (LIFO) principle.
Push: adds an element to the top of the stack
Pop: removes the top element from the stack
Peek: returns the top element without removing it
IsEmpty: checks if the stack is empty
Size: returns the number of elements in the stack
Three steps for using functions in C.
Declare the function with its return type, name, and parameters.
Define the function by writing the code for it.
Call the function by using its name and passing arguments if necessary.
The limit for the number of arguments passed to functions is not fixed. Arrays or structures can be used to pass more parameters.
The limit for the number of arguments passed to functions is not fixed and depends on the programming language and system architecture.
In C programming language, there is no limit on the number of arguments that can be passed to a function.
In Java, the maximum number of arguments that can be ...
A union is an organization formed by workers to protect their rights and interests in the workplace.
Unions negotiate with employers for better wages, benefits, and working conditions.
They also provide support and representation for workers in disputes with management.
Membership in a union is voluntary, but members pay dues to support the union's activities.
Unions can be industry-specific, such as the United Auto Worker...
if else is used for simple conditions while switch case is used for multiple conditions.
if else is a sequential decision-making statement while switch case is a multi-branch decision-making statement
if else is used when there are only a few conditions to be checked while switch case is used when there are multiple conditions to be checked
if else can have multiple conditions in a single statement while switch case can o...
Member functions are functions that are defined inside a class and can access the class's private and protected members.
Member functions are also known as methods.
They can be used to manipulate the data members of an object.
They can be overloaded, meaning multiple functions with the same name but different parameters can exist within a class.
They can be declared as const, meaning they do not modify the object's state.
E...
Find the output of c=++a+b-- where a=5 and b=4.
The value of a is incremented by 1 before the addition operation
The value of b is decremented by 1 after the addition operation
The final value of c is 10
The value of a becomes 6 and the value of b becomes 3
10 plants can be planted in 5 rows with 4 plants in each row.
Divide the plants into groups of 4.
Arrange the groups in 5 rows.
Each row will have 4 plants.
Exceptions handling is a mechanism to handle runtime errors in Java programs.
Exceptions are objects that are thrown at runtime when an error occurs
Java provides try-catch-finally blocks to handle exceptions
Checked exceptions must be handled or declared in the method signature
Unchecked exceptions can be handled or left unhandled
Custom exceptions can be created by extending the Exception class
I have experience in project management, data analysis, and consulting across various industries.
Managed multiple projects simultaneously, ensuring timely delivery and client satisfaction
Analyzed data to identify trends and provide insights for clients
Consulted with clients to develop and implement strategies for growth and efficiency
Worked with clients in industries such as healthcare, finance, and retail
Collaborated ...
To gain experience in consulting and develop skills in project management, team leadership, and client relations.
Gain experience in consulting
Develop skills in project management
Develop skills in team leadership
Develop skills in client relations
I appeared for an interview before Dec 2015.
based on 5 interviews
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