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How to Solve XOR Queries of a Subarray Problem
Master the XOR Queries of a Subarray LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsMedium#1310
LeetCode ProblemXOR Queries of a Subarray
You are given an array arr of positive integers. You are also given the array queries where queries[i] = [lefti, righti]. For each query i compute the XOR of elements from lefti to righti (that is, arr[lefti] XOR arr[lefti + 1] XOR ... XOR arr[righti] ). Return an array answer where answer[i] is the answer to the ith query.
ArrayBit ManipulationPrefix Sum
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Problem Breakdown
Understanding the XOR Queries of a Subarray Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are given an array arr of positive integers. You are also given the array queries where queries[i] = [lefti, righti]. For each query i compute the XOR of elements from lefti to righti (that is, arr[lefti] XOR arr[lefti + 1] XOR ... XOR arr[righti] ). Return an array answer where answer[i] is the answer to the ith query.
MediumProblem #1310
LeetCodeXOR Queries of a Subarray
Related Topics
ArrayBit ManipulationPrefix Sum
How Phantom Code Helps
Get real-time assistance for XOR Queries of a Subarray problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
arr = [1,3,4,8], queries = [[0,1],[1,2],[0,3],[3,3]]
Output
[2,7,14,8]
# Example 2
Input
arr = [4,8,2,10], queries = [[2,3],[1,3],[0,0],[0,3]]
Output
[8,0,4,4]
Constraints
1 <= arr.length, queries.length <= 3 * 104
1 <= arr[i] <= 109
queries[i].length == 2
0 <= lefti <= righti < arr.length
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Solve XOR Queries of a Subarray — You are given an array arr of positive integers. You are also given the array qu...
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def solve(input):
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Time: O(n) | Space: O(n)
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Frequently Asked Questions
Common questions about solving XOR Queries of a Subarray and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like XOR Queries of a Subarray during interviews?
Phantom Code generates complete solutions instantly with proper complexity analysis, letting you focus on explaining your approach and demonstrating problem-solving skills rather than getting stuck on implementation details during high-pressure situations.
What if the interviewer asks follow-up questions or modifications to problems like XOR Queries of a Subarray?
Phantom Code adapts in real-time. Screenshot the modified problem or use audio mode to capture the interviewer's follow-up, and get an updated solution within seconds — including edge cases and optimizations.
Can Phantom Code help me communicate my solution for problems like XOR Queries of a Subarray?
Yes. Phantom Code provides step-by-step approach explanations with 3 progressive thoughts, so you can walk through your solution naturally. It also provides time and space complexity analysis to discuss trade-offs.
How does Phantom Code assist with different programming languages for XOR Queries of a Subarray type problems?
Phantom Code supports 11 programming languages including Python, Java, C++, JavaScript, TypeScript, Go, Rust, Ruby, Swift, Kotlin, and C#. Set your preferred language and get idiomatic solutions.
What coding mistakes does Phantom Code help me avoid during XOR Queries of a Subarray interviews?
Phantom Code catches common mistakes like off-by-one errors, missing edge cases, incorrect base conditions, and suboptimal approaches. It provides clean, well-structured code that handles all edge cases.
Is Phantom Code detectable when solving problems like XOR Queries of a Subarray during live interviews?
No. Phantom Code runs as an invisible desktop overlay that doesn't appear in screen shares, recordings, or proctoring software. It works with Zoom, HackerRank, CodeSignal, CoderPad, and all major platforms.
How does Phantom Code help when I'm struggling with XOR Queries of a Subarray style questions under pressure?
The AI provides structured guidance: first the approach (what algorithm/data structure to use and why), then the implementation with clean code, and finally complexity analysis. This helps you think clearly even under pressure.
Does Phantom Code work for the coding platforms used in XOR Queries of a Subarray interviews?
Yes. Phantom Code works with all major coding platforms including LeetCode, HackerRank, CodeSignal, CoderPad, HackerEarth, and any browser-based coding environment.
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