Best Java DSA interview practice list
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Must know
- Arrays, strings, hash map
- Stack/queue
- Trees and BST
- Graph traversal
- Binary search
- DP basics
- Heap problems
Good to know
- Trie
- Union-Find
- Segment tree
- Bit manipulation
Typical Java coding round checklist
- Clarify constraints
- Use correct collection
- Write clean code
- Discuss complexity
- Test edge cases
Java interviews usually reward correctness, clarity, and good reasoning more than complicated syntax.
Adapted from 15_DSA_JAVA.md · “14. Best Java DSA interview practice list”. Code examples are study fragments. Difficulty and core labels are editorial estimates; version-specific behavior should be checked against your project.