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Solve the multi-transaction stock problem with the greedy peak-valley insight: sum every positive daily delta. Includes complexity analysis and DP alternative.
Solve Capacity to Ship Packages Within D Days by binary searching the ship capacity. Includes feasibility check, tight bounds, and a worked example.
Solve Find Peak Element in O(log n) by binary searching on the slope direction. Includes diagram and edge cases.
Solve Koko Eating Bananas by binary searching the eating speed. Includes the monotonic predicate, ceiling division, and complexity.
Solve Search a 2D Matrix by treating the sorted matrix as a flat sorted array and binary searching. Includes index arithmetic and complexity.
Solve Set Matrix Zeroes in place using the first row and column as markers. Includes a step-by-step walkthrough and edge cases.