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How to Solve Count Number of Maximum Bitwise-OR Subsets Problem
Master the Count Number of Maximum Bitwise-OR Subsets LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsMedium#2044
LeetCode ProblemCount Number of Maximum Bitwise-OR Subsets
Given an integer array nums, find the maximum possible bitwise OR of a subset of nums and return the number of different non-empty subsets with the maximum bitwise OR. An array a is a subset of an array b if a can be obtained from b by deleting some (possibly zero) elements of b. Two subsets are considered different if the indices of the elements chosen are different. The bitwise OR of an array a is equal to a[0] OR a[1] OR ... OR a[a.length - 1] (0-indexed).
ArrayBacktrackingBit ManipulationEnumeration
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Problem Breakdown
Understanding the Count Number of Maximum Bitwise-OR Subsets Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
Given an integer array nums, find the maximum possible bitwise OR of a subset of nums and return the number of different non-empty subsets with the maximum bitwise OR. An array a is a subset of an array b if a can be obtained from b by deleting some (possibly zero) elements of b. Two subsets are considered different if the indices of the elements chosen are different. The bitwise OR of an array a is equal to a[0] OR a[1] OR ... OR a[a.length - 1] (0-indexed).
MediumProblem #2044
LeetCodeCount Number of Maximum Bitwise-OR Subsets
Related Topics
ArrayBacktrackingBit ManipulationEnumeration
How Phantom Code Helps
Get real-time assistance for Count Number of Maximum Bitwise-OR Subsets problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
nums = [3,1]
Output
2
# Example 2
Input
nums = [2,2,2]
Output
7
# Example 3
Input
nums = [3,2,1,5]
Output
6
Constraints
1 <= nums.length <= 16
1 <= nums[i] <= 105
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Solve Count Number of Maximum Bitwise-OR Subsets — Given an integer array nums, find the maximum possible bitwise OR of a subset of...
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 Count Number of Maximum Bitwise-OR Subsets and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Count Number of Maximum Bitwise-OR Subsets 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 Count Number of Maximum Bitwise-OR Subsets?
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 Count Number of Maximum Bitwise-OR Subsets?
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 Count Number of Maximum Bitwise-OR Subsets 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 Count Number of Maximum Bitwise-OR Subsets 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 Count Number of Maximum Bitwise-OR Subsets 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 Count Number of Maximum Bitwise-OR Subsets 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 Count Number of Maximum Bitwise-OR Subsets 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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