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How to Solve Find XOR Sum of All Pairs Bitwise AND Problem
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LeetCode ProblemFind XOR Sum of All Pairs Bitwise AND
The XOR sum of a list is the bitwise XOR of all its elements. If the list only contains one element, then its XOR sum will be equal to this element. You are given two 0-indexed arrays arr1 and arr2 that consist only of non-negative integers. Consider the list containing the result of arr1[i] AND arr2[j] (bitwise AND) for every (i, j) pair where 0 <= i < arr1.length and 0 <= j < arr2.length. Return the XOR sum of the aforementioned list.
ArrayMathBit Manipulation
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Problem Breakdown
Understanding the Find XOR Sum of All Pairs Bitwise AND Problem
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Problem Statement
The XOR sum of a list is the bitwise XOR of all its elements. If the list only contains one element, then its XOR sum will be equal to this element. You are given two 0-indexed arrays arr1 and arr2 that consist only of non-negative integers. Consider the list containing the result of arr1[i] AND arr2[j] (bitwise AND) for every (i, j) pair where 0 <= i < arr1.length and 0 <= j < arr2.length. Return the XOR sum of the aforementioned list.
HardProblem #1835
LeetCodeFind XOR Sum of All Pairs Bitwise AND
Related Topics
ArrayMathBit Manipulation
How Phantom Code Helps
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Examples
# Example 1
Input
arr1 = [1,2,3], arr2 = [6,5]
Output
0
# Example 2
Input
arr1 = [12], arr2 = [4]
Output
4
Constraints
1 <= arr1.length, arr2.length <= 105
0 <= arr1[i], arr2[j] <= 109
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Solve Find XOR Sum of All Pairs Bitwise AND — The XOR sum of a list is the bitwise XOR of all its elements. If the list only c...
Here's the optimal approach using Array:
def solve(input):
# Optimal O(n) solution
return result
Time: O(n) | Space: O(n)
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Frequently Asked Questions
Common questions about solving Find XOR Sum of All Pairs Bitwise AND and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Find XOR Sum of All Pairs Bitwise AND 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 Find XOR Sum of All Pairs Bitwise AND?
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.
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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 Find XOR Sum of All Pairs Bitwise AND 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 Find XOR Sum of All Pairs Bitwise AND 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 Find XOR Sum of All Pairs Bitwise AND 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 Find XOR Sum of All Pairs Bitwise AND 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 Find XOR Sum of All Pairs Bitwise AND 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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