NeetCode #406LC-255MediumTreesNC Algo100
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#406 · #255 · Verify Preorder Sequence in Binary Search Tree(验证前序遍历序列二叉搜索树)

📌 Problem Statement & Constraints

Given an array of unique integers preorder, return true if it is the pre-order traversal of some binary search tree. Constraints: 1 <= preorder.length <= 10^4, 1 <= preorder[i] <= 10^4.
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