23. Dynamic Programming
Dynamic programming is introduced as a powerful architectural technique for designing algorithms, built on a foundation of inductive definitions. It allows for the systematic solving of problems by defining them in terms of smaller subproblems, leveraging properties like optimal substructure and overlapping subproblems. The chapter explores various examples including factorial computation and scheduling algorithms, culminating in strategies to optimize problem-solving through memoization and direct enumeration.
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What we have learnt
- Dynamic programming involves solving complex problems by breaking them down into simpler subproblems.
- Inductive definitions naturally lead to recursive implementations of algorithms.
- Optimal substructure allows the formulation of a solution in terms of solutions to smaller instances.
Key Concepts
- -- Dynamic Programming
- A method for solving complex problems by dividing them into simpler subproblems and solving each one just once, storing their solutions.
- -- Inductive Definition
- A method of defining a function in terms of itself with a base case for trivial solutions.
- -- Optimal Substructure
- An attribute of a problem that allows optimal solutions of the problem to be constructed from optimal solutions of its subproblems.
- -- Memoization
- A technique used in dynamic programming where previously computed values are stored to avoid redundant calculations.
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