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mediumGrind 75
Lowest Common Ancestor of a Binary Tree
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. Be clear about what a state is; that's the difference between BFS/DFS working or blowing up.
BFS / DFSTrees
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Meet Allison & Tim
Your AI coaches
Practice coding interviews out loud with real-time voice coaching. Your code actually runs.
Free ยท No sign up ยท Early access
1Lowest Common Ancestor of a Binary Treemedium
2Part 2
3Part 3
Start Part 1 to unlock your next challenge
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