Browse HackerRank JAVA solutions

We’ve compiled a list of HackerRank Java coding problems and solutions, covering object-oriented programming, strings, sorting, arrays, trees, stacks, graph theory, dynamic programming, regex and parsing, exceptions, collections, file handling, multithreading, and more.

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From entry-level to intermediate and advanced Java solutions

CodeRankGPT will assist you with all programming problems in your next HackerRank Java coding interview, from beginner to expert level.

Solve the Diagonal Difference HackerRank problem

The Diagonal Difference problem is a common exercise in coding, often used for learning array manipulation and basic math operations

View the Diagonal Difference HackerRank solution

Diagonal difference hackerrank solutions

Encrypt and Decrypt with the HackerRank Encryption Decryption problem

The Encryption Decryption problem on HackerRank involves removing spaces from a given text and arranging the characters into a grid based on the square root of the text's length

View the Encryption Decryption HackerRank solution

Navigate the Castle on the Grid with the HackerRank problem

The "Castle on the Grid" problem on HackerRank involves navigating a grid filled with open and blocked cells, similar to a chessboard where a rook moves along rows or columns

View the Castle on the Grid HackerRank solution

Solve the FizzBuzz HackerRank Python problem

The FizzBuzz problem is a well-known coding challenge often used in interviews and programming competitions, such as those hosted on HackerRank

View the FizzBuzz HackerRank Python solution

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