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How to Solve Bitwise ORs of Subarrays Problem
Master the Bitwise ORs of Subarrays LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsMedium#898
LeetCode ProblemBitwise ORs of Subarrays
Given an integer array arr, return the number of distinct bitwise ORs of all the non-empty subarrays of arr. The bitwise OR of a subarray is the bitwise OR of each integer in the subarray. The bitwise OR of a subarray of one integer is that integer. A subarray is a contiguous non-empty sequence of elements within an array.
ArrayDynamic ProgrammingBit Manipulation
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Problem Breakdown
Understanding the Bitwise ORs of Subarrays Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
Given an integer array arr, return the number of distinct bitwise ORs of all the non-empty subarrays of arr. The bitwise OR of a subarray is the bitwise OR of each integer in the subarray. The bitwise OR of a subarray of one integer is that integer. A subarray is a contiguous non-empty sequence of elements within an array.
MediumProblem #898
LeetCodeBitwise ORs of Subarrays
Related Topics
ArrayDynamic ProgrammingBit Manipulation
How Phantom Code Helps
Get real-time assistance for Bitwise ORs of Subarrays problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
arr = [0]
Output
1
# Example 2
Input
arr = [1,1,2]
Output
3
# Example 3
Input
arr = [1,2,4]
Output
6
Constraints
1 <= arr.length <= 5 * 104
0 <= arr[i] <= 109
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Solve Bitwise ORs of Subarrays — Given an integer array arr, return the number of distinct bitwise ORs of all the...
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 Bitwise ORs of Subarrays and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Bitwise ORs of Subarrays 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 Bitwise ORs of Subarrays?
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 Bitwise ORs of Subarrays?
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 Bitwise ORs of Subarrays 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 Bitwise ORs of Subarrays 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 Bitwise ORs of Subarrays 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 Bitwise ORs of Subarrays 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 Bitwise ORs of Subarrays 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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