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How to Solve Minimum Swaps to Group All 1's Together II Problem
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Start Free for WindowsMedium#2134
LeetCode ProblemMinimum Swaps to Group All 1's Together II
A swap is defined as taking two distinct positions in an array and swapping the values in them. A circular array is defined as an array where we consider the first element and the last element to be adjacent. Given a binary circular array nums, return the minimum number of swaps required to group all 1's present in the array together at any location.
ArraySliding Window
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Problem Breakdown
Understanding the Minimum Swaps to Group All 1's Together II Problem
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Problem Statement
A swap is defined as taking two distinct positions in an array and swapping the values in them. A circular array is defined as an array where we consider the first element and the last element to be adjacent. Given a binary circular array nums, return the minimum number of swaps required to group all 1's present in the array together at any location.
MediumProblem #2134
LeetCodeMinimum Swaps to Group All 1's Together II
Related Topics
ArraySliding Window
How Phantom Code Helps
Get real-time assistance for Minimum Swaps to Group All 1's Together II problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
nums = [0,1,0,1,1,0,0]
Output
1
# Example 2
Input
nums = [0,1,1,1,0,0,1,1,0]
Output
2
# Example 3
Input
nums = [1,1,0,0,1]
Output
0
Constraints
1 <= nums.length <= 105
nums[i] is either 0 or 1.
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Solve Minimum Swaps to Group All 1's Together II — A swap is defined as taking two distinct positions in an array and swapping the ...
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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 Minimum Swaps to Group All 1's Together II and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Minimum Swaps to Group All 1's Together II 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 Swaps to Group All 1's Together II?
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 Swaps to Group All 1's Together II?
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 Swaps to Group All 1's Together II 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 Swaps to Group All 1's Together II 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 Swaps to Group All 1's Together II during live interviews?
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How does Phantom Code help when I'm struggling with Minimum Swaps to Group All 1's Together II 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 Swaps to Group All 1's Together II 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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