1028. Recover a Tree From Preorder Traversal

LeetCodeStringTreeDepth-First SearchBinary TreeOpen on judge ↗

We run a preorder depth-first search (DFS) on the root of a binary tree. At each node in this traversal, we output D dashes (where D is the depth of this node), then we output the value of this node. If the depth of a node is D, the depth of its immediate child is D + 1. The depth of the root node is 0. If a node has only one child, that child is guaranteed to be the left child. Given the outpu

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solution.cppC++17

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