Binary search the first bad build
Medium Algorithms arena: binary search over a monotonic predicate
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Missing prerequisites: algorithms-easy-first-bad-build
A deploy train has 80 builds and one regression. Linear search is too slow for the arena timer, so you need the first build where `is_bad(build)` becomes true.
Learn to apply binary search over a monotonic predicate in an algorithm arena while explaining the invariant, safety constraints, and hidden edge cases.
- Demonstrates binary search over a monotonic predicate
- Handles the visible sample and hidden edge cases
- Keeps output deterministic and explainable
- Avoids unsafe dynamic execution
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