PYTHON PROBLEM 332 · Intermediate

Find minimum coins: Impossible amount

Return -1 when no combination can form the requested amount.

coin change · bottom-up DPcoin changebottom-up DP

PROBLEM OVERVIEW

What this Python exercise asks you to practise

This scenario tests find minimum coins. It belongs to the Dynamic Programming roadmap and uses the coin change · bottom-up dp pattern.

State design, recurrences, memoization, tabulation, optimization, and overlapping subproblems.

COMPLETE WORKSPACE

Learn the plan, trace the logic and run the solution

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SKILL TO CARRY FORWARD

Pattern relevance

This exercise strengthens coin change · bottom-up dp. Be ready to explain the input, the rule, the boundary cases, and why the chosen approach is appropriate.