Home › Java-success.com › 800+ Java Interview Q&As › 300+ Core Java Interview Q&As › Archive for Core Java – Data Structures
Blog Archives

03: Tree traversal algorithms in Java

Q1. What are the different binary tree traversal mechanisms? A1. Traversing a tree means visiting all the nodes of a tree in order. … Read more ›...

Members Only Content
Login Register 100+ Free Java interview FAQs 80+ Free Big Data interview FAQs

Java coding practice problems – prime and powerful

There is no other way to pass the Java coding tests other than practicing. I have failed Java coding tests due to lack of practice. How often do you get work with tree and graph data structures?

…

Read more ›


Searching algorithms in Java

This assumes that you understand “Swapping, partitioning, and sorting algorithms in Java“. Q1. Can you write a code to search for number 5 in 7 3 6 8 2 9...

Members Only Content
Login Register 100+ Free Java interview FAQs 80+ Free Big Data interview FAQs

Splitting input text & string processing coding Q&A

Q1. Can you write code to extract numbers from a given input text and return the sum of those numbers? Example: “1 some text 2 more text 4 more text...

Members Only Content
Login Register 100+ Free Java interview FAQs 80+ Free Big Data interview FAQs

Swapping, partitioning, and sorting algorithms in Java

Q1. Can you write an algorithm in Java to swap two variables? A1. Q2. Can you write an algorithm to bubble sort the following array { 30, … Read more...

Members Only Content
Login Register 100+ Free Java interview FAQs 80+ Free Big Data interview FAQs

800+ Java Interview Q&As

16+ Java Key Areas Interview Q&As
Key Area - Going places
(2)
Key Area - Ice Breaker
(7)
Key Area - Design Concepts
(7)
Key Area - Judging Experience
(26)
Key Area - Best Practices
(6)
Key Area - Concurrency Mgmt
(6)
Key Area - Low Latency
(10)
Key Area - CI/CD & DevOps
(7)
Key Area - Debugging
Key Area - Debug Hibernate
(3)
Key Area - Debug Java
(11)
Key Area - Debug JEE
(5)
Key Area - Debug Spark
(4)
Key Area - Debug Spring
(2)
Key Area - Design Patterns
Key Area - GoF Design
(8)
Key Area - JEE Design
(3)
Key Area - Exception Handling
(4)
Key Area - Memory Mgmt
(9)
Key Area - Performance
(13)
Key Area - Scalability
(3)
Key Area - SDLC
(7)
Key Area - Security
(18)
Key Area - Productivity Tools
(23)
Key Area - Transaction Mgmt
(6)
Key Area - QoS & SLAs
(8)
150+ Java Architect interview FAQs
Architecture - Patterns
(10)
Architecture - How to
(9)
Architecture - AWS
(8)
Architecture - Distributed
(7)
Architecture - Microservices
(6)
Architecture - QoS
(1)
Architecture - ERD
(1)
Architecture - ETL
(2)
Architecture - Low Latency
(6)
Architecture - UML
(1)
400+ Java must-know Interview FAQs
300+ Java Interview FAQs
Java FAQs - 01: Prepared?
(2)
Java FAQs - 02: Ice Breaker
(6)
Java FAQs - 03: Core Java
(13)
Java FAQs - 04: OOP & FP
(4)
Java FAQs - 05: JEE
(12)
Java FAQs - 06: Spring
(8)
Java FAQs - 07: Hibernate
(4)
Java FAQs - 08: Web Services
(6)
Java FAQs - 09: Microservices
(7)
Java FAQs - 10: Messaging
(2)
Java FAQs - 11: Architecture
(5)
Java FAQs - 12: RDBMS
(2)
Java FAQs - 13: SQL
(4)
Java FAQs - 14: Code Quality
(4)
Java FAQs - 15: Key Areas
(15)
Java FAQs - 16: UML
(1)
Java FAQs - 17: GIT
(4)
Java FAQs - 18: Unix
(3)
Java FAQs - 19: DevOps
(4)
Java FAQs - 20: AWS
(5)
Java FAQs - 21: Maven
(1)
Java FAQs - 22: Regex
(2)
Java FAQs - 23: JSON & XML
(3)
Java FAQs - 24: JMeter
(2)
80+ Java Code Quality Q&As
Code Quality - Automation
(1)
Code Quality - Code Coverage
(2)
Code Quality - FAQs
(4)
Code Quality - Profiling
(3)
Code Quality - Performance Test
(2)
Code Quality - Unit Testing
(3)
Code Quality - BDD
(4)
Code Quality – Testing DAOs
(4)
Code Quality – JUnit Spring
(6)
Code Quality – JUnit Web
(2)
Code Quality - Spring TXN
(2)
Java coding interview Q&As
Coding - Can you write code?
(22)
Coding - Complete the code
(13)
Coding - Converting from A to B
(6)
Coding - Designing your classes
(9)
Coding - Data Structures
Coding - Arrays
(2)
Coding - Big O notation
(2)
Coding - Graph Structure
(2)
Coding - LinkedList Structure
(2)
Coding - Map Structure
(1)
Coding - Pointer Algorithms
(3)
Coding - Queue Structure
(1)
Coding - Searching Algo
(1)
Coding - Sorting Algo
(4)
Coding - Stack Structure
(1)
Coding - Tree structure
(14)
Coding - Data Which & Why
(2)
Coding - Passing the unit tests
(5)
Coding - What is wrong?
(10)
Coding - Home Assignments
(5)
Coding - Written Test Core Java
(4)
Coding - Written Test JEE
(1)
800+ Java Interview Q&As
300+ Core Java Interview Q&As
Core Java - Overview
(4)
Core Java - Data types
(9)
Core Java - Constructors
(1)
Core Java - Reserved Key Words
(2)
Core Java - Classes
(3)
Core Java - Objects
(7)
Core Java - OOP
(10)
Core Java - GC
(2)
Core Java - Generics
(5)
Core Java - FP
(12)
Core Java - OOP to FP
(9)
Core Java - I/O
(8)
Core Java - Multithreading
(15)
Core Java - Data Structures
(5)
Core Java - Annotations
(2)
Core Java - AOP
(1)
Core Java - Other
(4)
Core Java - Collection API
(13)
Core Java - Differences X & Y
(5)
Core Java - Event Driven
(2)
Core Java - Exceptions
(1)
Core Java - Java 7
(2)
Core Java - Java 8
(24)
Core Java - JVM
(7)
Core Java - Reactive Program
(3)
Core Java - Swing & AWT
(2)
Core Java - Understanding
(4)
300+ Enterprise Java Interview Q&As
JEE - Overview
(2)
JEE - Web basics
(10)
JEE - Web Services
(11)
JEE - JPA
(2)
JEE - JTA
(1)
JEE - API Design
(2)
JEE - JDBC
(5)
JEE - Microservices
(8)
JEE - JMS
(5)
JEE - JMX
(3)
JEE - JNDI and LDAP
(2)
JEE - JSF
(2)
JEE - Other
(3)
Java frameworks interview Q&As
Framework - Hibernate Q&As
(13)
Framework - Spring Core
(6)
Framework - Spring MVC
(7)
Framework - Spring Cloud
(1)
Framework - Spring boot
(1)
Framework - Spring IO
(1)
Framework - Spring Config
(5)
Companion Tech Interview Q&As
Companion - Angular JS
(3)
Companion - Domain Knowledge
(3)
Companion - FIX
(2)
Companion - Git & SVN
(6)
Companion - Groovy
(7)
Companion - JavaScript
(6)
Companion - JMeter
(2)
Companion - Maven
(3)
Companion - NoSQL
(3)
Companion - Regex
(2)
Companion - SQL
(18)
Companion - Unix
(16)
Companion - JSON
(2)
Companion - XML
(2)
Companion - XSD
(2)
Companion - YAML
(2)
Tutorials - Enterprise Java
TUT - ⏯ Starting with Java
(22)
TUT - Diagnosis
(2)
TUT - Akka
TUT - Akka Scala
(3)
TUT - Akka Java
(6)
TUT - AWS EC2
(4)
TUT - CI/CD Jenkins
(3)
TUT - Core Java
TUT - Debugging
(4)
TUT - Java 8
(4)
TUT - JSON and Java
(1)
TUT - Java Beginner
(1)
TUT - XML and Java
(8)
TUT - CSV and Java
(2)
TUT - Docker
(8)
TUT - JEE
TUT - Web & Web Services
(7)
TUT - REST Client
(1)
TUT - JSF
(1)
TUT - JDBC
(6)
TUT - FIX and Java
(3)
TUT - JAXB
(8)
TUT - JMX
(1)
TUT - JPA
(2)
TUT - MySQL
(1)
TUT - Scala
TUT - Scala Actors
(1)
TUT - Spring & Hibernate
TUT - Hibernate
(3)
TUT - Spring Basics
(10)
TUT - Spring batch
(3)
TUT - Hibernate & Spring
(5)
TUT - Spring Boot
(6)
TUT - Spring IO
(1)
TUT - Spring ORM
(2)
TUT - Spring other
(2)
TUT - Spring OXM
(2)
TUT - Spring Cloud
(9)
TUT - Tools
TUT - JMeter
(3)
TUT - Maven
(4)
TUT - Maven Assembly
(2)
TUT - Maven Profiles
(1)
TUT - Productivity Tools
(9)
TUT - Kubernetes
(3)
TUT - ⏯ Videos
TUT - ⏯ Starting with Java
(12)
TUT - ⏯ Spring Core
(1)
TUT - ⏯ Spring MVC
(6)
TUT - ⏯ JDBC, Hibernate
(6)
TUT - ⏯ Spring Boot
(2)
TUT - ⏯ Angular with Spring
(1)
TUT - ⏯ Q&As
(2)
TUT - Other
TUT - SQL
(3)
TUT - Drools
(5)
TUT - Apache POI
(3)
TUT - DOS
(2)
TUT - Dozer
(2)
TUT - ESB
(1)
TUT - Groovy
(3)
TUT - Jasper Reports
(4)
TUT - Logging and auditing
(6)
TUT - Metrics
(2)
TUT - Orika Mapping
(2)
TUT - Pentaho Kettle ETL
(4)
TUT - Unix
(7)
TUT - Webspeher MQ
(3)
TUT - YAML
(1)
Top