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How to Solve Maximize Active Section with Trade I Problem
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Medium#3499
LeetCode ProblemMaximize Active Section with Trade I
You are given a binary string s of length n, where: You can perform at most one trade to maximize the number of active sections in s. In a trade, you: Return the maximum number of active sections in s after making the optimal trade. Note: Treat s as if it is augmented with a '1' at both ends, forming t = '1' + s + '1'. The augmented '1's do not contribute to the final count.
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Problem Breakdown
Understanding the Maximize Active Section with Trade I Problem
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Problem Statement
You are given a binary string s of length n, where: You can perform at most one trade to maximize the number of active sections in s. In a trade, you: Return the maximum number of active sections in s after making the optimal trade. Note: Treat s as if it is augmented with a '1' at both ends, forming t = '1' + s + '1'. The augmented '1's do not contribute to the final count.
MediumProblem #3499
LeetCodeMaximize Active Section with Trade I
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How PhantomCodeAI Helps
Get real-time assistance for Maximize Active Section with Trade I problems during coding interviews. PhantomCodeAI provides instant solutions and explanations.
Examples
# Example 1
Input
s = "01"
Output
1
# Example 2
Input
s = "0100"
Output
4
# Example 3
Input
s = "1000100"
Output
7
# Example 4
Input
s = "01010"
Output
4
Constraints
1 <= n == s.length <= 105
s[i] is either '0' or '1'
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Solve Maximize Active Section with Trade I — You are given a binary string s of length n, where: You can perform at most one ...
Here's the optimal approach using String:
def solve(input):
# Optimal O(n) solution
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Time: O(n) | Space: O(n)
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Frequently Asked Questions
Common questions about solving Maximize Active Section with Trade I and using PhantomCodeAI during coding interviews.
How does PhantomCodeAI help with LeetCode problems during a coding interview?
PhantomCodeAI reads the problem from a screenshot or listens to it via audio, then generates a complete solution with a step-by-step approach and time/space complexity, so you can focus on explaining your reasoning rather than getting stuck on implementation.
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Can PhantomCodeAI handle follow-up questions and modifications?
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Should I still practice these problems on my own first?
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