CS Foundations & Interview PrepIntermediate8 modules~4.0 hours hands-on3 learning modes
Advanced Coding Interview Patterns
Master the high-leverage interview patterns beyond core arrays and graphs: binary search, intervals, heaps, monotonic stacks, backtracking, tries, greedy reasoning, and bit manipulation.
// What you'll be able to do- Search values, boundaries, and feasible solution spaces
- Sort events, merge ranges, and reason about overlap
- Keep the next best candidate available efficiently
- Resolve nearest-greater and boundary questions in one pass
8 modules, built to run
Every module ships runnable code. Expand any one to see what's inside.
00IntroductionTurn unfamiliar problems into recognizable shapes30 min
Questions this module answers
- How can you recognize the advanced patterns that fill the largest gaps in interview preparation?
- How do you choose the learning path that fits your practice style?
Start moduleFree preview
01Binary Search on AnswersSearch values, boundaries, and feasible solution spaces30 min
Questions this module answers
- How can you recognize monotonic feasibility as a binary-search signal?
- How do you implement lower-bound search without off-by-one errors?
02Intervals and Sweep LinesSort events, merge ranges, and reason about overlap30 min
Questions this module answers
- How do you normalize interval problems by sorting the relevant boundary?
- How do you implement merging and maximum-overlap counting?
03Heaps and Priority QueuesKeep the next best candidate available efficiently30 min
Questions this module answers
- How do you explain the heap invariant and logarithmic repair operations?
- How do you implement top-k selection and k-way merge?
04Monotonic StacksResolve nearest-greater and boundary questions in one pass30 min
Questions this module answers
- How can you recognize nearest-greater and nearest-smaller boundary problems?
- How do you maintain monotonic invariants while resolving deferred answers?
05Backtracking and TriesExplore constrained choices and prune prefix searches30 min
Questions this module answers
- How do you frame backtracking as choose, explore, and undo?
- How do you use trie prefixes to prune impossible word-search branches?
06Greedy and Bit ReasoningProve local choices and exploit binary invariants30 min
Questions this module answers
- How do you justify greedy choices with exchange arguments instead of intuition?
- How do you use XOR and bit masks to encode compact invariants?
07Pattern SynthesisChoose, defend, and combine advanced patterns under pressure30 min
Questions this module answers
- How do you translate constraints and output shape into a short pattern shortlist?
- How do you combine patterns deliberately and defend the resulting complexity?
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