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How to Solve Longest Unequal Adjacent Groups Subsequence I Problem
Master the Longest Unequal Adjacent Groups Subsequence I LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsEasy#2900
LeetCode ProblemLongest Unequal Adjacent Groups Subsequence I
You are given a string array words and a binary array groups both of length n. A subsequence of words is alternating if for any two consecutive strings in the sequence, their corresponding elements at the same indices in groups are different (that is, there cannot be consecutive 0 or 1). Your task is to select the longest alternating subsequence from words. Return the selected subsequence. If there are multiple answers, return any of them. Note: The elements in words are distinct.
ArrayStringDynamic ProgrammingGreedy
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Problem Breakdown
Understanding the Longest Unequal Adjacent Groups Subsequence I Problem
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Problem Statement
You are given a string array words and a binary array groups both of length n. A subsequence of words is alternating if for any two consecutive strings in the sequence, their corresponding elements at the same indices in groups are different (that is, there cannot be consecutive 0 or 1). Your task is to select the longest alternating subsequence from words. Return the selected subsequence. If there are multiple answers, return any of them. Note: The elements in words are distinct.
EasyProblem #2900
LeetCodeLongest Unequal Adjacent Groups Subsequence I
Related Topics
ArrayStringDynamic ProgrammingGreedy
How Phantom Code Helps
Get real-time assistance for Longest Unequal Adjacent Groups Subsequence I problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
words = ["e","a","b"], groups = [0,0,1]
Output
["e","b"]
# Example 2
Input
words = ["a","b","c","d"], groups = [1,0,1,1]
Output
["a","b","c"]
Constraints
1 <= n == words.length == groups.length <= 100
1 <= words[i].length <= 10
groups[i] is either 0 or 1.
words consists of distinct strings.
words[i] consists of lowercase English letters.
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Solve Longest Unequal Adjacent Groups Subsequence I — You are given a string array words and a binary array groups both of length n. A...
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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 Longest Unequal Adjacent Groups Subsequence I and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Longest Unequal Adjacent Groups Subsequence I 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 Longest Unequal Adjacent Groups Subsequence I?
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 Longest Unequal Adjacent Groups Subsequence I?
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 Longest Unequal Adjacent Groups Subsequence I 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 Longest Unequal Adjacent Groups Subsequence I 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 Longest Unequal Adjacent Groups Subsequence I 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 Longest Unequal Adjacent Groups Subsequence I 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 Longest Unequal Adjacent Groups Subsequence I 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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