Merge accounts by shared email: No shared emails

What this Python exercise asks you to practise

This scenario tests merge accounts by shared email. It belongs to the Top Company Graphs and Union-Find roadmap and uses the model vertices and edges → select traversal or shortest-path strategy pattern.

Solve connectivity, dependency, weighted-path, and ordering problems with graph algorithms.

Skills and reported company tags

Interview platforms and learner reports associate this problem family with the companies below. Tags are preparation signals, not a guarantee that an identical question will appear.