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How to Solve Groups of Special-Equivalent Strings Problem
Master the Groups of Special-Equivalent Strings LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsMedium#893
LeetCode ProblemGroups of Special-Equivalent Strings
You are given an array of strings of the same length words. In one move, you can swap any two even indexed characters or any two odd indexed characters of a string words[i]. Two strings words[i] and words[j] are special-equivalent if after any number of moves, words[i] == words[j]. A group of special-equivalent strings from words is a non-empty subset of words such that: Return the number of groups of special-equivalent strings from words.
ArrayHash TableStringSorting
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Problem Breakdown
Understanding the Groups of Special-Equivalent Strings Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are given an array of strings of the same length words. In one move, you can swap any two even indexed characters or any two odd indexed characters of a string words[i]. Two strings words[i] and words[j] are special-equivalent if after any number of moves, words[i] == words[j]. A group of special-equivalent strings from words is a non-empty subset of words such that: Return the number of groups of special-equivalent strings from words.
MediumProblem #893
LeetCodeGroups of Special-Equivalent Strings
Related Topics
ArrayHash TableStringSorting
How Phantom Code Helps
Get real-time assistance for Groups of Special-Equivalent Strings problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
words = ["abcd","cdab","cbad","xyzz","zzxy","zzyx"]
Output
3
# Example 2
Input
words = ["abc","acb","bac","bca","cab","cba"]
Output
3
Constraints
1 <= words.length <= 1000
1 <= words[i].length <= 20
words[i] consist of lowercase English letters.
All the strings are of the same length.
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Solve Groups of Special-Equivalent Strings — You are given an array of strings of the same length words. In one move, you can...
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 Groups of Special-Equivalent Strings and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Groups of Special-Equivalent Strings 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 Groups of Special-Equivalent Strings?
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 Groups of Special-Equivalent Strings?
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 Groups of Special-Equivalent Strings 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 Groups of Special-Equivalent Strings 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 Groups of Special-Equivalent Strings 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 Groups of Special-Equivalent Strings 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 Groups of Special-Equivalent Strings 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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