Algorithms & Data Structures
Intermediate
Pro
Greedy
Make the best move now and never look back: when local choices add up to a global optimum
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Learn the greedy algorithm paradigm: making the locally best decision at each step in a single pass and trusting (with proof, not hope) that it leads to the globally optimal answer. This subject covers the core reasoning tools -- exchange arguments and greedy-choice invariants -- and applies them to three classic interview problems: the jump game, the gas station circuit, and candy distribution.