hackerrank problem solving in java

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HackerRank Solutions in Java

Hello coders, in this post you will find each and every solution of HackerRank Problems in Java Language . After going through the solutions, you will be clearly understand the concepts and solutions very easily.

One more thing to add, don’t straight away look for the solutions, first try to solve the problems by yourself. If you find any difficulty after trying several times, then look for the solutions.

Java HackerRank Solutions

• Welcome to Java! – Hacker Rank Solution
• Java Stdin and Stdout I – Hacker Rank Solution
• Java If-Else – Hacker Rank Solution
• Java Stdin and Stdout II – Hacker Rank Solution
• Java Output Formatting – Hacker Rank Solution
• Java Loops I – Hacker Rank Solution
• Java Loops II – Hacker Rank Solution
• Java Datatypes – Hacker Rank Solution
• Java End-of-file – Hacker Rank Solution
• Java Static Initializer Block – Hacker Rank Solution
• Java Int to String – Hacker Rank Solution
• Java Date and Time – Hacker Rank Solution
• Java Currency Formatter – Hacker Rank Solution
• Java Strings Introduction – Hacker Rank Solution
• Java Substring – Hacker Rank Solution
• Java Substring Comparisons – Hacker Rank Solution
• Java String Reverse – Hacker Rank Solution
• Java Anagrams – Hacker Rank Solution
• Java String Tokens – Hacker Rank Solution
• Pattern Syntax Checker – Hacker Rank Solution
• Java Regex – Hacker Rank Solution
• Java Regex 2 – Duplicate Words – Hacker Rank Solution
• Valid Username Regular Expression – Hacker Rank Solution
• Tag Content Extractor – Hacker Rank Solution
• Java BigDecimal – Hacker Rank Solution
• Java Primality Test – Hacker Rank Solution
• Java BigInteger – Hacker Rank Solution
• Java 1D Array – Hacker Rank Solution
• Java 2D Array – Hacker Rank Solution
• Java Subarray – Hacker Rank Solution
• Java Arraylist – Hacker Rank Solution
• Java 1D Array(Part 2) – Hacker Rank Solution
• Java List – Hacker Rank Solution
• Java Map – Hacker Rank Solution
• Java Stack – Hacker Rank Solution
• Java Hashset – Hacker Rank Solution
• Java Generics – Hacker Rank Solution
• Java Comparator – Hacker Rank Solution
• Java Sort – Hacker Rank Solution
• Java Dequeue – Hacker Rank Solution
• Java BitSet – Hacker Rank Solution
• Java Priority Queue – Hacker Rank Solution
• Java Inheritance I – Hacker Rank Solution
• Java Inheritance II – Hacker Rank Solution
• Java Abstract Class – Hacker Rank Solution
• Java Interface – Hacker Rank Solution
• Java Method Overriding – Hacker Rank Solution
• Java Method Overriding 2 (Super Keyword) – Hacker Rank Solution
• Java Instanceof Keyword – Hacker Rank Solution
• Java Iterator – Hacker Rank Solution
• Java Exception Handling (Try-Catch) – Hacker Rank Solution
• Java Exception Handling – Hacker Rank Solution
• Java Varargs – Hacker Rank Solution
• Java Reflection – Attributes – Hacker Rank Solution
• Can You Access? – Hacker Rank Solution
• Prime Checker – Hacker Rank Solution
• Java Factory Pattern – Hacker Rank Solution
• Java Singleton Pattern – Hacker Rank Solution
• Java Visitor Pattern – Hacker Rank Solution
• Java Annotations – Hacker Rank Solution
• Covariant Return Types – Hacker Rank Solution
• Java Lambda Expressions – Hacker Rank Solution
• Java MD5 – Hacker Rank Solution
• Java SHA-256 – Hacker Rank Solution

Disclaimer: The above Problem ( Java HackerRank ) is generated by Hacker Rank but the Solution is Provided by CodingBroz . These tutorial are only for Educational and Learning Purpose.

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HackerRank Java solutions

"HackerRank Java Solutions" is a collection of Java programming solutions curated and designed for HackerRank, an online platform that allows programmers to practice, compete, and improve their coding skills. This compilation offers step-by-step explanations and code snippets to solve various challenges and exercises available on HackerRank, aiding learners in enhancing their proficiency in Java programming through hands-on practice and problem-solving.

HackerRank Java Solutions

• "Hello, World!" program with Java HackerRank Solution
• if-else program with Java HackerRank Solutions
• Loops program with Java HackerRank Solutions.
• String operations program with Java HackerRank Solutions
• Lexicographically smallest and largest substrings of length 'k' with Java HackerRank Solutions
• Substring calculation with Java HackerRank Solutions
• String Palindrome program with Java HackerRank Solutions
• Anagram Strings program with Java HackerRank Solutions
• String Tokens program with Java HackerRank Solutions
• Print each sequential element on a new line program with Java HackerRank Solutions
• Print the number of subarrays of an array having negative sums with Java HackerRank solutions.
• String Balancing program with Java HackerRank Solutions
• Java Varargs sum program using Java HackerRank solutions
• Regular expression to validate an IP address using Java HackerRank solution
• Java Map program using Java HackerRank Solutions
• Java Sort program using Java HackerRank solutions
• Java Dequeue program using Java HackerRank solutions
• Exception handling program using Java HackerRank Solutions
• Java Abstract class program with Java HackerRank Solutions
• Regular expression program to remove duplicate words from a string using Java HackerRank Solutions

Welcome to Java! Easy Max Score: 3 Success Rate: 97.05%

Java stdin and stdout i easy java (basic) max score: 5 success rate: 96.87%, java if-else easy java (basic) max score: 10 success rate: 91.34%, java stdin and stdout ii easy java (basic) max score: 10 success rate: 92.65%, java output formatting easy java (basic) max score: 10 success rate: 96.54%, java loops i easy java (basic) max score: 10 success rate: 97.67%, java loops ii easy java (basic) max score: 10 success rate: 97.31%, java datatypes easy java (basic) max score: 10 success rate: 93.66%, java end-of-file easy java (basic) max score: 10 success rate: 97.91%, java static initializer block easy java (basic) max score: 10 success rate: 96.12%, cookie support is required to access hackerrank.

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hackerrank-problem-solutions

Here are 22 public repositories matching this topic..., java-aid / hackerrank-solutions.

hackerrank solutions github | hackerrank all solutions | hackerrank solutions for java | hackerrank video tutorial | hackerrank cracking the coding interview solutions | hackerrank data structures | hackerrank solutions algorithms | hackerrank challenge | hackerrank coding challenge | hackerrank algorithms solutions github| hackerrank problem so…

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sapanz / Hackerrank-Problem-Solving-Python-Solutions

Hackerrank Problem solving solutions in Python

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aleksandar-dinic / HackerRank-Solutions

HackerRank solutions written in Swift and a little bit in Java 🖖

• Updated Sep 17, 2022

BEPb / hackerrank_sql

cracking-the-coding-interview algorithm-challenges coding-challenges hackerrank-sql

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Bassem-ElHusseiny / HackeRrank

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shouhaddo / HackerRank-solutions

This repository is only for educational purpose , i have uploaded answers for questions which I solve on hackerRank

• Updated Oct 1, 2020
• Jupyter Notebook

codersaga / HackerRank

Solutions to every question available on HackerRank !! :)

• Updated May 4, 2020

laziestcoder / Python_HR_Codes

Python Practice Problems Solutions from HackerRank

• Updated Aug 7, 2019

MarsRoboters / HackerRank-Python-Solutions

Solutions of HackerRank Python Problems

• Updated Nov 20, 2020

ekinkaradag / HackerRank-Solutions

These are the codes I have written for HackerRank problems

• Updated Sep 22, 2020

Okroshiashvili / HackerRank

Hacker Rank solutions

• Updated Nov 30, 2020

IsratIJK / HackerRank-Python

Contains all the source codes of mine from HackerRank

• Updated Aug 30, 2021

egorfolley / Language_proficiency_Cpp

By HackerRank in C++

• Updated Sep 14, 2019

HaiBuiDinh / HackerrankJavaSolution

Hackerrank Java Solutions

• Updated Aug 15, 2022

aj-shivali / hackerrankproblems

The repository contains solutions to problems from the various domain which are available at Hackerrank.com

• Updated Jul 21, 2021

Ash2127 / Hackerrank-DataStructures-Solutions

Solutions of HackerRank Data Structures Problem Statements. Directly copy paste these codes in the HackerRank terminal and you are good to go.

• Updated Apr 8, 2021

jayexioms / Hackerrank-Problem-PHP-Solution

HackerRank Problem Solution in PHP

• Updated Apr 24, 2020

meetgandhi123 / Hacker-Rank-Problem-Solving-Python

Solution of all the problem solving section of HackerRank using Pyhton.

• Updated Oct 4, 2020

Sayoo123 / hackerrank-solutions

• Updated Aug 27, 2023

yashprsin / Hackerrank-Problem-Solving-Python-Solutions

• Updated Mar 5, 2024

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6 Problem-Solving HackerRank Questions and Answers for Your Interview

Team CodeQuotient / December 18, 2022 / Software Engineering Bootcamp

HackerRank is a tech company that provides a common platform for programmers and tech companies where people can participate in coding challenges (such as hackathons) or create their own. Most importantly, you can directly land a job from HackerRank if you successfully complete the challenges on its Jobs page . After that comes the interview stage. Usually, HackerRank questions tend to focus largely on problem-solving skills.

Let’s go through 6 problem-solving HackerRank sample questions and answers that can help you perform better in interviews.

Commonly Asked HackerRank Questions and Their Answers

HackerRank interviews have both technical and non-technical questions to evaluate a candidate. Since the people who cleared the coding challenges meet the criteria for technical knowledge, the interviewers majorly focus on other aspects – communication skills, mindset, ethics, etc.

Technical HackerRank Questions

The interviewer may ask you technical interview questions on topics similar to the ones mentioned below.

1. How do you build a palindrome?

One of the most common questions in HackerRank interviews is about building a palindrome. Unless you have a good understanding of strings and dynamic programming, you won’t be able to answer these questions. You need to store the palindromic substrings in a table and use them as building blocks for larger palindromes.

Interviewers love questions about palindromes because they test candidates’ ability to write clean code and their clarity of mind.

2. How do you organise containers of balls?

HackerRank interviewers will often ask you how to arrange coloured balls in various situations.

The answer may depend on the specific situation, as various arrangements may be needed. However, some common structures may include arranging the balls in order of size, colour, alphabetically, or numerically. Additionally, for more complex arrangements, a sorting algorithm could be used to arrange the balls according to the desired criteria.

Questions regarding organising containers of balls test your understanding of 2D arrays, sorting and iteration. Focus on these areas to be comfortable with such questions in HackerRank interviews.

3. How do you solve a problem in the Subarray Division?

Problems on subarray division can be solved in a few lines of code using the ‘two-pointers technique’. This technique works by having two pointers pointing to the array’s beginning and end, respectively, and then looping through the array. Thus, it is a perfect question to test the depth of a candidate’s coding skills , ability to optimise, and basic mathematical skills.

Software developers benefit from knowing the two-pointer technique, which helps them efficiently solve array problems and more. It’s also a common interview subject that comes up frequently. Preparing for problems on subarray division boosts your chances of cracking HackerRank interviews.

Non-Technical Questions

Non-technical questions often reveal more about a candidate’s mindset and problem-solving process in the work environment than technical questions. Here are some non-technical HackerRank questions and answers to better prepare you for interviews:

4. How will you select a new tool to invest in?

Interviewers ask questions like this to evaluate how a candidate does their research about something. While there is no obvious correct answer to this question, your response should show that you’re good at researching a product or service.

The key factors you must keep in mind while answering this question (or similar questions) are:

• The problem you’re trying to solve with the tool
• How credible are the people behind the tool?
• Alternatives of the tool
• Cost of the tool
• Pros and cons of the tool

Ensure your answer reflects the way you research anything new.

5. How will you tackle a situation where a teammate is bound to miss a deadline?

There are high chances of you or your teammates missing a few deadlines, be it for avoidable or unavoidable circumstances. When an interviewer asks what you’ll do in such situations, they are trying to figure out how you deal with crises and support your team members. Your answer should reflect empathy and a drive to solve challenges on short notice. Like most non-technical questions, the attitude behind the answer is more important than the contents of the answer.

6. Will you break the rules or guidelines for the larger benefit of the company?

Interviewers love questions that put candidates in a tough spot. That’s why interviewers often ask interviewees why the company should not hire them.

When asked whether you’d be willing to break any rule, be diplomatic in your answer. It is best to back your argument with logic and facts without being rigid on either perspective. Questions like these test a candidate’s character, morals, and ethics.

General Tips for HackerRank Questions and Answers

For those of you who wish to go the extra mile, here are some general suggestions for acing your interview:

• Follow a framework like STAR (Situation, Task, Action, Result) or SOAR (Situation, Obstacle, Action, Results) to answer problem-solving questions
• Read the job description thoroughly and understand your job responsibilities
• Learn about the company – mission and values
• Work on your speaking skills, either with a friend or in front of a mirror/camera

Get Ready for HackerRank Interviews With Codequotient

Now that you have an idea of how these HackerRank questions would be, we want you to know that in case you need further help to upskill yourself in terms of your technical skills and soft skills, you should know that…

CodeQuotient offers practical resources for anyone who wants to land a tech job. Whether you’re a learner or a job seeker, our BCA+UGPSE and Software Engineering Bootcamp programs can make you job-ready for the upcoming tech industry. Get in touch with us now to know more about these programs!

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