Free for the community
Interview prep and cheat sheets you can keep. Free with an email, and every answer comes with code that runs.
The 20 questions you are most likely to get: 8 theory answers in plain words and 12 coding problems, from the highest salary to the first non-repeating character. Every answer was run on Java 21, with its real output.
20 theory and 30 coding questions. Adds Optional, reduce, groupingBy vs partitioningBy, method references, the Nth highest salary, anagrams and more. Every answer was run on Java 21.
The full set: 40 theory and 60 coding questions, ranked by how often they are asked. Covers toMap duplicate keys, teeing(), Java 9 additions, infinite streams and the tricky coding rounds. All run on Java 21.
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