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Leetcode 3526. Range XOR Queries with Subarray Reversals
Maintain an array under two online operations — reverse any subarray and query the XOR of a given range — with up to many operations; the core challenge is to preserve element order under reversals while answering range-XOR queries efficiently, typically requiring a data structure that supports range updates and queries (e.g., implicit balanced BST or segment tree with lazy reversal).
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