PYTHON PROBLEM 113 · Starter

Calculate set union and intersection: Shared course IDs

Compare course IDs selected by two students.

set operators · sortingset operatorssorting

PROBLEM OVERVIEW

What this Python exercise asks you to practise

This scenario tests calculate set union and intersection. It belongs to the Sets and Dictionaries roadmap and uses the set operators · sorting pattern.

Uniqueness, membership tests, key-value lookup, frequency counting, and grouping.

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 set operators · sorting. Be ready to explain the input, the rule, the boundary cases, and why the chosen approach is appropriate.