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How to Solve Minimum Moves to Convert String Problem
Master the Minimum Moves to Convert String LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsEasy#2027
LeetCode ProblemMinimum Moves to Convert String
You are given a string s consisting of n characters which are either 'X' or 'O'. A move is defined as selecting three consecutive characters of s and converting them to 'O'. Note that if a move is applied to the character 'O', it will stay the same. Return the minimum number of moves required so that all the characters of s are converted to 'O'.
StringGreedy
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Problem Breakdown
Understanding the Minimum Moves to Convert String Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are given a string s consisting of n characters which are either 'X' or 'O'. A move is defined as selecting three consecutive characters of s and converting them to 'O'. Note that if a move is applied to the character 'O', it will stay the same. Return the minimum number of moves required so that all the characters of s are converted to 'O'.
EasyProblem #2027
LeetCodeMinimum Moves to Convert String
Related Topics
StringGreedy
How Phantom Code Helps
Get real-time assistance for Minimum Moves to Convert String problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
s = "XXX"
Output
1
# Example 2
Input
s = "XXOX"
Output
2
# Example 3
Input
s = "OOOO"
Output
0
Constraints
3 <= s.length <= 1000
s[i] is either 'X' or 'O'.
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Solve Minimum Moves to Convert String — You are given a string s consisting of n characters which are either 'X' or 'O'....
Here's the optimal approach using String:
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 Minimum Moves to Convert String and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Minimum Moves to Convert String 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 Minimum Moves to Convert String?
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 Minimum Moves to Convert String?
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 Minimum Moves to Convert String 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 Minimum Moves to Convert String 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 Minimum Moves to Convert String 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 Minimum Moves to Convert String 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 Minimum Moves to Convert String 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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