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The Gauntlet: Data Structures and Algorithms: Uncharted

Courses Data Structures and AlgorithmsThe Gauntlet

The GauntletPro

Practice the full interview loop, communicate tradeoffs, and combine the course in one dispatch system.

Data Structures and Algorithms
Unit 16 of 16
20 lessons
142 min
460 XP

This unit is part of Pro. Upgrade to open every lesson in it.

Lessons

20 total

1The Whiteboard DoorApply the interview loop in order: clarify, establish a baseline, find its bottleneck, optimize, and verify.ProInteractiveConcept6 min20 XPOpen
2Restate and ProbeTurn an ambiguous route brief into an explicit input, output, constraint, and edge-case contract.ProInteractiveConcept6 min20 XPOpen
3Brute Force FirstApply honest nested-pair brute force to proving a target pair exists with a transparent nested scan before optimizing.ProCodeConcept6 min20 XPOpen
4Find the BottleneckIdentify the repeated operation that dominates a baseline algorithm's growth.ProInteractiveConcept6 min20 XPOpen
5Optimize with a MapApply one-pass complement-map optimization to replacing repeated complement scans with one indexed pass and a lower counter.ProCodeConcept6 min20 XPOpen
6Talk the ComplexityExplain time and space bounds by linking input size to repeated operations and extra storage.ProInteractiveConcept6 min20 XPOpen
7Gauntlet: ArraysApply prefix-product and suffix-product passes to building product-except-self output with prefix and suffix passes and no division.ProCodePractice8 min20 XPOpen
8Gauntlet: StringsApply frequency-map anagram battery to checking a battery of anagram pairs with balanced character counts.ProCodePractice8 min20 XPOpen
9Gauntlet: ChainsApply midpoint reverse and alternating merge to finding the midpoint, reversing the second half, and alternating both halves.ProCodePractice8 min20 XPOpen
10Gauntlet: StacksApply unmatched-opening stack count to counting the minimum unmatched parentheses that must be removed.ProCodePractice8 min20 XPOpen
11Gauntlet: TreesApply level averages plus right-side view to producing level averages and the right-side view in one BFS.ProCodePractice8 min20 XPOpen
12Gauntlet: HeapsApply end-time min-heap room allocation to counting simultaneous meeting rooms with an end-time heap.ProCodePractice8 min20 XPOpen
13Gauntlet: GraphsApply topological course-completion test to deciding whether every course can finish through topological removal.ProCodePractice8 min20 XPOpen
14Gauntlet: DPApply prefix-reachable word-break table to deciding whether dictionary words can cover every prefix of a string.ProCodePractice8 min20 XPOpen
15The Structure ShowdownSelect data structures for rapid briefs by identifying the dominant operation each must make cheap.ProInteractiveConcept6 min20 XPOpen
16The Edge-Case ArmoryApply empty-singleton-duplicate edge-case repair to repairing a sorted dedupe routine against empty, singleton, and repeated-value tests.ProCodeConcept6 min20 XPOpen
17The Mock WalkthroughPresent a complete problem-solving walkthrough that connects the contract, baseline, optimization, complexity, and verification.ProInteractiveConcept6 min20 XPOpen
18Speed RoundClassify structures and complexities quickly while preserving the assumptions behind each answer.ProInteractiveConcept6 min20 XPOpen
19Plan the CapstoneOrder the dispatch capstone stages so parsing, deduplication, undo, priority, routing, and reporting have explicit dependencies.ProInteractiveConcept6 min20 XPOpen
20The Dispatch CenterApply deduplicate prioritize route undo and report pipeline to parsing jobs, deduping ids, applying undo, prioritizing work, routing by BFS, and printing the report.ProCodeCapstone12 min80 XPOpen

The Pattern Playbook