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Reconstruct a binary tree from its preorder string representation where node values are integers and left/right children are given as parenthesized substrings (e.g., "4(2(3)(1))(6(5))"); parse nested parentheses and multi-digit/negative numbers and attach subtrees appropriately using recursion or a stack.
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Leetcode 536. Construct Binary Tree from String
Reported Aug 4, 2025 · 3 source reports
SENIOR, STAFF
Source snapshot: Nov 12, 2026
View sourceMoengage
Leetcode 536. Construct Binary Tree from String
Reported Aug 1, 2026 · 2 source reports
MID_LEVEL
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View sourceSpaceX
Leetcode 536. Construct Binary Tree from String
Reported Jun 8, 2026 · 1 source report
MID_LEVEL
Source snapshot: Nov 12, 2026
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