Fizzbuzz java hackerrank solution

Code Review Stack Exchange is a question and answer site for peer programmer code reviews. It only takes a minute to sign up. I wrote this simple solution about FizzBuzz. Is there any possible way to solve or optimize the solution, such as with bitwise tricks? Most people would have used 15 which I believe to be wrong. The way you've done it, it's clear that the first case is a multiple of the other two cases.

Well done! They are magic numbers though, and should be replaced with meaningful constants. Otherwise, I wouldn't change another thing. Disclaimer: Someone will come behind me and talk about ways to make the code more efficient, but none of them will be as readable as this algorithm.

That's a classic FizzBuzz solution.

FizzBuzz Solved in the C Programming Language

I wouldn't try to do any clever optimization — it won't make any difference to performance. One hundred iterations of anything is trivial for a computer.

Furthermore, most of the time will be dominated by the output routines, which you can't do much about.

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The code formatting, on the other hand, could be improved. The most glaring issue is the omission of the braces for the final else. Why make your code ugly to save a couple of bytes? You have four calls to System.

If you want to change your code from printing to the console to writing to a file or a database, you have to change four lines in your code even though you're really only changing one "thing".

Why not pull out the four System. From a general readability and maintainability standpoint this code could take some improvements.

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The else if statements are really quite untidy and frequently end up being the source of trouble. A brace out of place there could cause a real mess - I'd look to refactor them out by putting the work into a function that converts int i into the string to output. It will make the code longer but also clearer because you have a separation of concerns where main controls the overall program flow and output, and the function converts the number to a string replacing it with keywords as needed.

Once you've abstracted that work into a function you can also toy around with the many various ways that function could work without else if and test them independently of the main code.

Some of those other implementations might be Also, the 3 x 5 could stand some improvement; not because it should be 15 because that is wrong too but because they are 'magic numbers'. Neither 3 nor 5 should appear in the body of the code except as constants to define the values for the 'Fizz' and 'Buzz' states, that would mean 'Fizz x Buzz'. Always consider that in the real world any code you make is likely to grow in complexity or length - getting those kinds of behaviours in place for a very simple piece of code make a huge difference when you start coding on a more complex project.

Quite what whitespace is doing affecting output in a C style language I've no idea You have a multiple level if statement that makes use of bracing, the else statement must use bracing as well. The following would be slightly better in regard to constant s use and also it first computes the actual conditions that matter and then reuses them here and there:.

I will reiterate the need for braces in your statements as well as the importance of avoiding magic numbers in your code. You also asked for how to 'solve' it and this is an alternative approach:. Why I like it : It's extensible, concise and flexible without giving up on readability.Work fast with our official CLI. Learn more.

If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. This repository contains efficient hackerrank solutions for most of the hackerrank challenges including video tutorials. If you are looking for anyone of these things. This helps support the channel and allows us to continue to add more tutorial. Thank you for the support! Skip to content. MIT License.

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fizzbuzz java hackerrank solution

Update MarkAndToys. Oct 1, May 20, Apr 27, Nov 15, Would be interesting to see the effects of object creation. I feel like the standard solution would be more efficient given a single input at a time.

Java 8 new features were a really big disappointment. Post a Comment. FizzBuzz is one of the most famous programming questions from interviews, which is generally used to weed out programmers who can't program.

The problem is deceptively simple but you can't solve it if you don't know how to build programming logic. I love it just for its simplicity. Now coming back to the second part of this article, Java 8. It's been more than a year, I think it was March 18 last year when Java 8 was first released and to date, the most common question I have got is, how to learn new features of Java 8? I think the best way to learn Java 8 new features is the same as the best way to learn any new programming language like solving common coding problems, implementing data structure, common algorithms, and implementing famous design patterns.

I particularly find solving coding problems and an excellent way to learn and master Java 8 Streams. Remember, Stream is a new way to write code without using for loop. Now coming back to our FizzBuzz problem, here is the problem statement and you need to solve it using Java 8. Bonus points if you write unit tests to check your solution, you must do even if not asked during Interviews.

Share to Twitter Share to Facebook. I feel like the standard solution would be more efficient given a single input at a time April 2, at PM Anonymous said April 3, at AM Anonymous said That's a most stupid mis use of Optional I have ever seen.

April 9, at PM TS said Newer Post Older Post Home. Subscribe to: Post Comments Atom. Follow Me Follow. Search This Blog. Subscribe for Blog Posts. Interview Questions core java interview question data structure and algorithm 74 Coding Interview Question 73 interview questions 56 SQL Interview Questions 33 object oriented programming 32 design patterns 30 thread interview questions 30 collections interview questions 25 spring interview questions 20 database interview questions 16 servlet interview questions 15 Programming interview question 6 hibernate interview questions 6.

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Writing code in comment? Please use ide. Related Articles. Fizz Buzz is a very simple programming task, asked in software developer job interviews. Python program to print Fizz Buzz. Number divisible by 15, divisible. Number divisible by 3, print 'Fizz'. Number divisible by 5. Print numbers. Recommended Articles. Check if a graph constructed from an array based on given conditions consists of a cycle or not.

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Load Comments. We use cookies to ensure you have the best browsing experience on our website.Join Stack Overflow to learn, share knowledge, and build your career.

Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Write a program that prints the numbers from 1 to But obviously there's room to improve because some people wrote it with 27 characters less.

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How is that possible? Any suggestions? I don't really care about the ranks, I just wanna know what I'm missing. God knows what the other people did to lose 13 more characters.

FizzBuzz Solution in Java

Anyway, thanks. Warning: this code is just an exercise of trying to make the code shorter. It is neither good or readable as normal code should try to be! Yes, it is possible to make it even shorter. Proof: According to the leaderboardthe highest score for java is 7. It may not be getting significantly shorter yet, most likely due to the boilerplate code for main and print method. Based on everything suggested on this QA so far, it is possible to achieve at least 6.

Many more approaches have been discussed here and here. It leads us to the question, which submission led to the top score? The answer is bash scripting. Proof: leaderboard for bash. The hint has been kindly provided by the author of the top submission, Byron Formwalt at here. If we are new to bash scripting, we may wish to get started with few resources mentioned herehereand here.

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fizzbuzz java hackerrank solution

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fizzbuzz java hackerrank solution

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fizzbuzz java hackerrank solution

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