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Number of Connected Components in an Undirected Graph
This is really about exploring a state space without revisiting the same work. Interviewers love it because it reveals your traversal modeling and your edge-case discipline. The trap is revisiting states or missing a base case; your visited/queue logic needs to be tight.
Meet Allison & Tim
Your AI coaches
Practice coding interviews out loud with real-time voice coaching. Your code actually runs.
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