NeetCode #472LC-1028HardTrees
← Back to All Problems#472 · #1028 · Recover a Tree From Preorder Traversal(从先序遍历还原二叉树)
📌 Problem Statement & Constraints
We run a pre-order depth-first search on a binary tree, outputting
D dashes followed by the node value, where D is the node's depth. Given this traversal string, reconstruct the tree. Constraints: 1 <= traversal.length <= 10^5, node values are positive integers.🔒
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