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How to Solve Minimum Moves to Pick K Ones Problem
Master the Minimum Moves to Pick K Ones LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsHard#3086
LeetCode ProblemMinimum Moves to Pick K Ones
You are given a binary array nums of length n, a positive integer k and a non-negative integer maxChanges. Alice plays a game, where the goal is for Alice to pick up k ones from nums using the minimum number of moves. When the game starts, Alice picks up any index aliceIndex in the range [0, n - 1] and stands there. If nums[aliceIndex] == 1 , Alice picks up the one and nums[aliceIndex] becomes 0(this does not count as a move). After this, Alice can make any number of moves (including zero) where in each move Alice must perform exactly one of the following actions: Return the minimum number of moves required by Alice to pick exactly k ones.
ArrayGreedySliding WindowPrefix Sum
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Problem Breakdown
Understanding the Minimum Moves to Pick K Ones Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are given a binary array nums of length n, a positive integer k and a non-negative integer maxChanges. Alice plays a game, where the goal is for Alice to pick up k ones from nums using the minimum number of moves. When the game starts, Alice picks up any index aliceIndex in the range [0, n - 1] and stands there. If nums[aliceIndex] == 1 , Alice picks up the one and nums[aliceIndex] becomes 0(this does not count as a move). After this, Alice can make any number of moves (including zero) where in each move Alice must perform exactly one of the following actions: Return the minimum number of moves required by Alice to pick exactly k ones.
HardProblem #3086
LeetCodeMinimum Moves to Pick K Ones
Related Topics
ArrayGreedySliding WindowPrefix Sum
How Phantom Code Helps
Get real-time assistance for Minimum Moves to Pick K Ones problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
nums = [1,1,0,0,0,1,1,0,0,1], k = 3, maxChanges = 1
Output
3
# Example 2
Input
nums = [0,0,0,0], k = 2, maxChanges = 3
Output
4
Constraints
2 <= n <= 105
0 <= nums[i] <= 1
1 <= k <= 105
0 <= maxChanges <= 105
maxChanges + sum(nums) >= k
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Solve Minimum Moves to Pick K Ones — You are given a binary array nums of length n, a positive integer k and a non-ne...
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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 Moves to Pick K Ones and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Minimum Moves to Pick K Ones 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 Pick K Ones?
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 Pick K Ones?
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 Pick K Ones 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 Pick K Ones 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 Pick K Ones 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 Pick K Ones 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 Pick K Ones 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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