Algorithms & Data Structures
Intermediate
Pro
Trees
Master recursive thinking on the data structure that models hierarchy itself
60 min read
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Learn how binary trees are built, traversed, and reasoned about recursively, then apply that thinking to search, balance, path, reconstruction, and serialization problems. Covers inversion, balance checks, level-order views, BST validation, lowest common ancestor, traversal-based reconstruction, max path sum, symmetry, vertical order, kth-smallest, and serialization.