Maximum XOR for Each Query

Problem Overview

• Core task: For each query [l, r], find the maximum value of f over all contiguous subarrays inside arr[l..r], where f repeatedly XORs adjacent elements until one value remains.
• Input/Output: Given int array arr and q queries (l, r); return one int per query—the maximum XOR value; constraints not specified.
• Domain: Array processing and bitwise XOR reduction.
• Company: From Uber interviews; a coding interview problem and common interview question.