Question 1

What are the two key properties of a problem that can be solved using dynamic programming?

Accepted Answer

A problem can be solved using dynamic programming if it has two properties: 1. Overlapping Subproblems: The problem can be broken down into subproblems that are reused several times. 2. Optimal Substructure: The optimal solution to the problem can be constructed from the optimal solutions of its subproblems.

Question 2

What is the difference between memoization and tabulation?

Accepted Answer

Memoization is a top-down approach where you solve the problem recursively and store the results of subproblems in a cache to avoid recomputation. Tabulation is a bottom-up approach where you solve the problem iteratively, starting from the smallest subproblems and building up to the original problem.

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