CoursesBacktracking & GreedyConstraint Search
Constraint Search Review
Mixed recap of the island: prune at the branch vs filter at the leaf, the mark/explore/unmark contract on shared boards, O(1) constraint bookkeeping, global fast-fails, and symmetric-bucket pruning.
AlgoFox Pro
Backtracking & Greedy is part of AlgoFox Pro
You can read the whole course outline here. The exercises are in the app, along with your streak, your mistake review, and the progress that carries across your devices.
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