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How to Solve Minimum Add to Make Parentheses Valid Problem
Master the Minimum Add to Make Parentheses Valid LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsMedium#921
LeetCode ProblemMinimum Add to Make Parentheses Valid
A parentheses string is valid if and only if: You are given a parentheses string s. In one move, you can insert a parenthesis at any position of the string. Return the minimum number of moves required to make s valid.
StringStackGreedy
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Problem Breakdown
Understanding the Minimum Add to Make Parentheses Valid Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
A parentheses string is valid if and only if: You are given a parentheses string s. In one move, you can insert a parenthesis at any position of the string. Return the minimum number of moves required to make s valid.
MediumProblem #921
LeetCodeMinimum Add to Make Parentheses Valid
Related Topics
StringStackGreedy
How Phantom Code Helps
Get real-time assistance for Minimum Add to Make Parentheses Valid problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
s = "())"
Output
1
# Example 2
Input
s = "((("Output
3
Constraints
1 <= s.length <= 1000
s[i] is either '(' or ')'.
How Phantom Code Helps with LeetCode Problems
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Solve Minimum Add to Make Parentheses Valid — A parentheses string is valid if and only if: You are given a parentheses string...
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 Add to Make Parentheses Valid and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Minimum Add to Make Parentheses Valid 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 Add to Make Parentheses Valid?
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 Add to Make Parentheses Valid?
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 Add to Make Parentheses Valid 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 Add to Make Parentheses Valid 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 Add to Make Parentheses Valid 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 Add to Make Parentheses Valid 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 Add to Make Parentheses Valid 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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