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C++ “Diamond Problem” of Multiple Inheritance
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Java
- If You Put System.exit(0) on Try or Catch block, Will Finally Block Execute?
- JVM platform dependent?
- Method overriding vs overloading
- Why have a private constructor
- Difference between object and class
- How copy constructors work
- Final modifier
- Finally block
- Java: Will Finally run after return?
- Java Protected Example
- Java serializable class example
- Multiple Inheritance
- How to Create a Thread in Java
- Interface vs. Abstract Class
- Thread States in Java
- Arithmetic Exception
- Overridden Method
- Dynamic Binding
- Can constructors be synchronized in Java?
- Does Java pass by reference or by value?
- Difference between a primitive type and a class type?
- Does Java have pointers?
- Downcasting in Java
- Java: Diamond Problem
- Java: Can an interface extend another interface?
- Java: Are objects of the same type as the interface implemented?
- Java: Can an interface be instantiated?
- Find First Nonrepeated Character
- Java: What’s the difference between equals() and ==?
- Find trailing zeros in factorial
- Java Reflection Example
- Bit Manipulation Interview Questions and Answers
- XOR in Java
- Java Inner Class Example
- When to use inner classes in Java
- Inner vs nested class
- Java Anonymous Class Example
- Anonymous Class Interface
- Argument Defined Anonymous Inner Class
C/C++
- Introduction
- Function Overloading
- How to Read Complex C Declarations
- C++ abstract keyword
- Pure Virtual Function
- Lvalues and Rvalues in C
- Inline vs. Macro
- Diamond Problem
- How Vtables Work
- Virtual Destructors
- Friend Classes in C++
- How do you call C functions from C++?
- What is a memory leak in C++?
- What is the difference between delete and delete[ ]?
- What’s the difference between a class variable and an instance variable?
- Can static function access non-static members of class?
- Execution order of constructor and destructor in inheritance
- Does C++ support multiple inheritance?
- Can you change the “this” pointer?
- Function Templates in C++ example
- C++: The compiler and function templates
- C++: Function template with more than one type parameter
- C++: #include ” ” vs. #include <>
- C++: Name Hiding
- C++ Ellipsis Catch Handler
- What happens if a thrown exception is not handled?
- C++ namespace example
- C++ const pointer examples
Databases/SQL
- SQL Interview Questions
- UNION vs. UNION ALL
- Inner vs. Outer joins
- SQL Key Definition
- Differences between Primary and Foreign Keys
- Natural Key In Database
- Secondary Key
- Simple key in SQL
- Superkey Example
- What is Referential Integrity
- Having vs. Where clause
- How do database indexes work?
- What is a self join?
- Example of DISTINCT in SQL
- Retrieve unique rows without DISTINCT
- Practice Interview Question 1
- Practice Interview Question 1 continued
- Practice Interview Question 1 continued
- Practice Interview Question 2
- Advanced SQL Interview Questions and Answers
- Advanced SQL Interview Questions and Answers Part 2
- Practice Interview Question 2 continued
- Data Mining vs. Data Warehousing
- Ternary/Three-valued Logic in SQL
- Find Maximum Value Without Using Aggregate
- SQL Injection Example and Tutorial
- SQL Injection Prevention
- Blind SQL Injection Example
- Parameterized Queries vs Prepared Statements
- Prepared Statement Example
- Difference between a full join and an inner join?
- Difference between a left outer join and right outer join?
- Difference between a left join and a left outer join?
- SQL: Having vs Group By
- SQL: Group By with multiple columns
- SQL – Select Distinct and Order By
- SQL – Order By default sort order
- Derived table vs subquery
- Correlated vs Uncorrelated Subquery
- Find nth highest salary – SQL
- Cardinality in SQL
- Selectivity in SQL Databases
- Cardinality versus Selectivity
- Clustered vs. Non Clustered Index
- Page versus block
- Database Locking
- Lock Escalation
- Database Deadlock Example
- What is a database transaction?
- SQL Server Transaction
- Oracle Transaction
- MySQL Transaction
- DB2 Transaction
- Concurrent Update Problem
- How to Tune Database Performance
- Database Full Table Scan
- What is cost based optimization?
- How to tune SQL queries
- SQL Index Performance
- What is a bitmap index?
- Oracle Indexes Examples
- System privileges vs. object privileges
- SQL Grant
- SQL Revoke
- SQL Create User
- Database Roles
- SQL CASE Statement
- SQL Searched CASE Statement
- SQL Inline View
- RANK() versus DENSE_RANK()
Javascript
- Javascript Interview Questions
- Javascript Outside the Browser
- JavaScript Strict Mode
- #"https://www.programmerinterview.com/javascript/how-to-print-a-javascript-object/">How to print a Javascript object
- #"https://www.programmerinterview.com/javascript/javascript-block-scope/">#"https://www.programmerinterview.com/javascript/javascript-function-scope/">Javascript Function Scope
- #"https://www.programmerinterview.com/javascript/what-is-javascript-minification/">What is Javascript minification?
- Minification vs Obfuscation
- Falsy values in Javascript
- Javascript Method Chaining
- Javascript Nested Function Example
- Javascript Global Object
- Wrapper Objects in Javascript
PHP
- Find a Client IP Address
- PHP Interview Questions
- Difference between == and === in PHP?
- How would you parse HTML in PHP?
- PHP: What are magic methods?
- PHP: Example of the __autoload function
- PHP: self vs $this
- PHP: self vs. static
- Find if string contains another string – php
- How to delete an element from an array in php?
- PHP toString
- Return JSON from PHP
- How to remove warnings in PHP?
- Advanced PHP Interview Questions And Answers
- Advanced PHP Interview Questions And Answers Part 2
- Advanced PHP Interview Questions And Answers Part 3
- How to return an array from a PHP function
- How to delete cookies in PHP
- PHP cookie versus session
- Can sessions work without cookies?
Data Structures
- Data Structure Interview Questions and Answers
- Big O Notation
- Big O versus Big Omega notations
- DFS vs. BFS
- Hash Tables versus Binary Search Trees
- How to find if a linked list is circular has a cycle or ends
- Preorder Traversal Algorithm
- Inorder Traversal
- Postorder Traversal
- Difference between stack and heap
- Find nth to last element in a linked list
- Delete a node in the middle of a singly linked list
- Reverse a linked list
Design Pattern Questions
- Design Pattern Interview Questions and Answers
- What Is GOF?
- Design Pattern Interview Question 1
- Design Pattern Interview Question Part 2
- Design Pattern Interview Question part 3
- Decorator pattern versus Inheritance
- Thread Safety in Singleton
Excel Interview Questions
- Excel Interview Questions
- Cut and paste versus copy and paste in Excel
- How to link cells in Excel
- Absolute references in Excel
- Excel Range Formula
- Excel Entire Column
- How to move an entire column in excel?
- How to add a dropdown list to Excel
HTML5
- HTML5 Interview Questions and Answers
- What is a CSS Box Model?
- History of HTML5
- Void elements HTML5
- New Features in HTML5 Forms
- HTML5 email form field
- HTML5 Polyfill Example
- What is a shiv in HTML5?
- HTML5 Video Codecs
- Containers versus codecs
- Codec Hardware Support
Networking
- Networking Interview Questions
- Why Use Mesh Topology for My Network?
- Baud rate vs bit rate
- What is a MAC address?
- What happens when you visit a website?
Operating Systems
- Operating System Interview Questions
- How Virtual Memory Works
- Paging and Page Faults
- Purpose of Swapping
- Thread vs. Process
- Swapping Versus Paging
- Vmware Fusion come with Windows?
- Does Parallels Desktop come with Windows?
- Monitors vs Semaphores
- Example of Threading and Synchronization
- User Threads vs. System Threads
Recursion
- Recursion Interview Questions
- Explanation of Recursion
- Can every recursive function be made iterative?
- Recursion Versus Iteration
- Permutations of A String
- Factorial Iterative and Non Recursive
- Find nth Fibonacci number
- Tail Recursion
- Tail Call Optimization
Apache Interview Questions
- Introduction
- Purpose of ASF’s DocumentRoot Directive
- Is a restart to Apache required after a change to .htaccess file?
- How to password protect a file in .htaccess
- How to disable password protection in .htaccess
- How to password protect a directory using .htaccess
- Directory directive in .htaccess
- Does .htaccess slow site down?
- What is an Apache module?
General/Miscellaneous
- Introduction
- What is Ascii?
- HTML GET vs. POST
- Black vs White Box Testing
- Postfix vs. Prefix
- Is String A Palindrome Function?
- CSS id vs. Class
- CSS Sprite Example
- Recursion Interview Question
- Is array access in Java expensive compared to C++?
- Java Method – Calculate Factorial
- Web vs. application server
- Why Manhole Covers Are Round
- Logarithm in HTML
- Exponents in HTML
- Less than sign in HTML
- Tracking Open Emails
- Tracking Opens Plain Text Emails
- Click tracking in emails
- How To Send an HTML email from Gmail
- Network Performance 2 Major Issues
- Symmetric vs. Public key Cryptography
- Why don’t C# and Java support multiple inheritance?
- FTP command to transfer a directory
- What’s the difference between a compiled and an interpreted language?
- Swap numbers without temp
- Find Max Without Comparison
- Find continuous sequence with largest sum
- URL Size Limit
- How to find the number of downloads for an app – iTunes
- How does iTunes rank apps?
- How to find your WordPress version
- Rank Sets in order of their intersections
Non-Technical Questions
- Introduction
- Why work here?
- Five years?
- Why leave?
Interviewing in India
- India – Introduction
- India – Recruiters
Working As a Software Engineer
- Working life – Big Company Part 1
- Working life – Big Company Part 2
Financial Analyst Questions
- Financial Analyst Interview Questions
- Financial Analyst interview questions and answers
- Financial Analyst interview Questions and Answers Part 2
Job Advice For Programmers
- How to Ace an Interview
- How to prepare for a software engineering interview
- Introduction
- Job Offer Negotiations
- Skype Interview Tips
- So You Want to Be a Programmer?
- Should my resume be only one page?
- Should I Expect Less Salary After Not Working
- Does how I dress matter in an interview?
- Does the Company I work for matter?
- Should I bring copies of my resume to an interview?
- Negotiating an offer for a new job
Puzzles
- Cutting a cake into 8 pieces
- Puzzles Interview Questions And Answers
- Minimum guesses to find a # from 1 to 1000
- three-switches-three-bulbs
- 100 Lockers Puzzle
- 8 Pennies Find Lightest 7 equal
- Measure weight of an elephant with no scale
- Measure 4 liters
- 25 horses 5 tracks 3 fastest puzzle
- Same national champion 65 year span
- Rope Bridge Puzzle Four People One Flashlight
- 8 marbles puzzle find heaviest
- 8 marbles riddle generalize solution
- 2 Fuses Problem Measure 45 Minutes
- Train Escape Puzzle 2 boys
- Prisoner Hat Riddle
- 2 Eggs 100 Floors Puzzle
- 3 Ants Triangle Puzzle
- Find number of squares chessboard
Assortment of Knowledge
- Introduction
- Web Listings Inc. Scam
- WordPress url http error
- FTP from Mac Terminal
- Mput to FTP from Mac Terminal
- Does websense block adsense?
- What country are Danish people from?
- What country are Dutch people from?
- Is Donald Trump a Republican?
- Is the Vatican in Rome?
- What is a “topper”?
- How does India feed all it’s people?
- Does India give foreign aid?
- Does Britain have a space program?
- Why is Blackberry also called Crackberry?
- Does Google return different results for phones?
- Can Google recognize faces?
- Can Facebook recognize faces?
- Does Google own Yelp?
- What countries have Yelp?
- Is Yelp in India?
- How to make a restricted call from a cell phone?
- Is Google auto-complete based on past queries?
- Does Yahoo use Bing?
- Does Yahoo use Google?
- Yahoo Google Antitrust
- What share does Mark Zuckerberg own of Facebook?
- Who is George Costanza based on?
- How to get the radio code for an Acura TSX?
- NBA Players that went broke
- How much is Zuckerberg worth?
- Do airlines x ray checked baggage?
- Do airlines charge for infants?
- Whats the difference between a nonstop and direct flight?
- Do airlines charge for car seats?
- Do Airplanes have power outlets?
- Do airlines charge for pets?
- Do airlines charge for wheelchairs?
- Does Prague use the Euro?
- Does the Czech Republic use the Euro?
- Does Switzerland use the Euro?
- How expensive is Switzerland?
- How expensive is Paris?
- Eiffel Tower Light Show
- How much does the Paris Metro cost for one ticket?
- Are there roads in Venice?
- Are Bank of America debit cards insured?
- Is Venice an island?
- Review of the Danubius Hotel in London, Regents Park
- Should you use your debit card when traveling?
- What is Bank Of America’s international phone number?
- What is the cost of a 5 day Oyster card pass in London’s underground tube?
- Where is the best place to exchange dollars to pounds in London?
- Do they give free tapas in Granada, Spain?
- Where is the best place to exchange money in Cordoba, Spain?
- Where is the best place to exchange money in Granada, Spain?
- Where is the best place to exchange money in Madrid, Spain?
- Review of the NH Victoria Hotel in Granada Spain
- How to get to Malaga from Granada
- How to get to Cordoba from Malaga
- Cheapest Airport Shuttle in Honolulu
- Cost of taxi Honolulu Airport to Waikiki
- How expensive is Honolulu?
- Is Terminal 1 at SFO International?
- Review of Iberia Flight 6275 from Madrid to Chicago
- Vegetarian food in Waikiki
- Dish Network Scam
- Fedex Stolen iPhone
- Fee for ending eBay auction early
- PayPal Email Scam Example
- Send email address through eBay
- How to connect Dish Network remote to a new TV?
- Do Tennis Players Get Paid for Davis Cup?
- What is a gazetted holiday?
American Vocabulary
- Introduction
- What is a pop quiz?
- What does back burner mean?
- What is a “pissing contest”?
- What does “let’s play it by ear” mean?
- Earns The Big Bucks?
- What does shady mean?
- It all boils down to?
- What is crunch time?
- Game Time Decision?
- Catch Off Guard?
- What is an alpha male?
- What is a hard stop?
- Take Conversation Off Line?
- What is hump day?
- Putting Lipstick On a Pig?
- Picking somebody’s brain?
- What is a pow wow?
- Pushing the Envelope?
- 6 to one half dozen to the other
- Reinvent the Wheel?
- What does “in a row” mean?
- What is a “stones throw away”?
- What is a red flag?
- What is a “fire drill”?
- Meaning of “where there’s smoke there’s fire”
- Meaning of “et al”
- Meaning of out of commission?
- Meaning of “fly by night”?
- What does “flight risk” mean?
- What does “catch wind” mean?
- What is a brain fart?
- What does “make a killing” mean?
- In tennis what’s a bagel?
- What is a “bounced check”?
- What does “shortchange” mean?
- What does it mean to “clock out”?
- What is shock value?
- What does “be the bigger man” mean?
- What does “rube” mean?
- What is “careerism”?
- What is a “haunt”?
- Meaning of “get feet wet”?
- Meaning of “changing of the guard”?
- What is a “hard copy”?
- What does “brush with death” mean?
- In tennis, what is a pusher?
- What does “OTE” mean in sales?
- What does “pay lip service” mean?
- What does “tip of the iceberg” mean?
- What is an advert?
- In the 11th hour meaning
- Gentleman’s C meaning
- Meaning of teetotalar
- Hala Madrid Meaning
- Make your mark meaning
- Shameless Plug Meaning
- Low Hanging Fruit Meaning
- Successism meaning
- See eye to eye meaning
- Rob Peter to Pay Paul meaning
- Case in point meaning
- Bait and Switch Meaning
- Pardon My French Meaning
- Throw him under the bus meaning
- Wrong line of work meaning
- My cue to leave meaning
- What is a buzzkill?
- Coined the Term Meaning
- Elephant in the room meaning
- Winging it meaning
- Touch and go meaning
- Hold my own meaning
- Throw a line meaning
- Skin in the game meaning
- Brain dump meaning
- He had the last laugh meaning
- Call it a night Meaning
- Speak off the cuff meaning
- He has a chip on his shoulder meaning
- Touch base meaning
- On the house meaning
- What are meeting minutes?
- What is a low life?
- What are brownie points?
- Show True Colors Meaning
- What does legit mean?
- Just a heads up meaning
- On the line meaning
- Cream of the Crop meaning
- Right as Rain Meaning
- Hat in hand meaning
- What is a cake eater?
- What is a second wind?
- Bush league move meaning
- Skating on thin ice meaning
- Last straw meaning
- At my wit’s end meaning
- At the end of my rope meaning
- At Large Meaning
- What is tunnel vision in slang?
- Do me a solid meaning
- In a pig’s eye meaning
- Wear emotions on sleeve meaning
- Keep plugging away definition
- He is toast meaning
- What is smart money?
- On the lam meaning
- Living large meaning
  - What is the Difference Between an Array and Linked List?
- Hold the fort down meaning
- Lay low meaning
- Over the hill meaning
- Out of the question meaning
- Runs a tight ship meaning
- Around the corner meaning
Technical Vocabulary
- Introduction
- What is a soft launch in software?
- What is a software generalist?
- What is a staging environment?
- What is deprecated code?
- What is syntactic sugar?
- What is a turnkey solution?
- What is a White hat hacker?
- What is web root?
- What is the LAMP stack?
- What is GoF in design patterns?
- What is a “hack” in software?
- What is hard coding in Java?
Science Questions
- Science Questions Introduction
- What is the longest earthquake ever?
- Are all volcanoes made of lava?
- Why do rivers wind?
- What makes rivers run?
- Does the Mississippi River form a delta?
- Do glaciers ever melt?
- What is an ephemeral river?
- What is the snout of a glacier?
- Are there any rivers in the desert?
- How much of the world’s land is covered by desert?
- Do Caves Last Forever?
- What are gallery caves?
- What is the world’s longest cave?
- What is the name for an expert on caves?
- Who first realized earth circles the sun?
- Why does the Moon look the same size as the Sun?
- How do rockets work in space?
- How many satellites are launched each year?
- Does Pentagon know where every satellite is?
- What planets have been visited by spacecrafts?
- What tree is the symbol of Canada?
- Why don’t all trees lose their leaves?
- Do all plants grow from seeds?
- Are fruits seeds?
- Are any vegetables also fruits?
- Why do flowers have pretty colors?
- Problems with the green revolution?
- What are the largest seeds?
- Do any flowers bloom for just a day?
- How many plants are edible?
- Has any woman ever run a 4 minute mile?
- Did women ever put deadly nightshade in their eyes?
- How can a willow tree cure a headache?
- Does Coca Cola come from same plant as cocaine?
- What plant has two different flowers?
- What trees make wood?
- What trees are used to make cricket bats?
- What is the world’s worst smelling flower?
- Is there a plant that eats frogs?
- What plant did the Egyptians use for writing?
- How do plants find water in the desert?
- How often does it rain in Chile’s Atacama desert?
- Is the snow pink in Antarctica?
- What frog makes arrows poisonous?
- Do reindeers really pull sleighs?
- What’s the difference between a moose and an elk?
- What’s the difference between a reindeer and a caribou?
- Why is a grizzly bear grizzly?
- Do wolves really howl at the moon?
- Do all penguins live in the Antarctic?
- What bird never sees the sunset?
- Do zebras neigh like horses?
- What’s the difference between a male lion and a female?
- Can crocodiles climb trees?
- Does a mother crocodile carry babies between her teeth?
- Are crocodiles like dinosaurs?
- What animal can jump the highest?
- Do vultures hunt?
- Difference between a buffalo and a bison?
- Who first wore trousers?
- Which parts of the body are most sensitive to heat?
- What country has the most arable land?
- How long can a cheetah run?

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Recursion Interview Questions

Understanding recursion is probably one of the more difficult things to do in computer science. This is probably why interviewers love to test out people’s knowledge of it.

In this section, we really try to not just help you understand what recursion is, but also help you to understand when you can use recursion in order to solve a problem. Learning when and how to apply recursion is probably a lot more difficult than just learning what recursion is, and being able to apply recursion effectively in an interview situation is even more difficult. Start out by taking a look at the questions and answers in this section.

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Recursion Interview Questions