PYTHON PROBLEM 308 · Company Medium

Build a tree from preorder and inorder: Right-skewed reconstruction

Build a tree whose nodes all lie on the right.

Choose DFS/BFS → define node state → combine child resultstreedivide and conquerhash map

PROBLEM OVERVIEW

What this Python exercise asks you to practise

This scenario tests build a tree from preorder and inorder. It belongs to the Top Company Trees and Tries roadmap and uses the choose dfs/bfs → define node state → combine child results pattern.

Cover the binary-tree, BST, trie, traversal, serialization, and path questions seen in coding loops.

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INTERVIEW CONTEXT

Skills and reported company tags

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