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How to Solve Find the Maximum Length of a Good Subsequence II Problem
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LeetCode ProblemFind the Maximum Length of a Good Subsequence II
You are given an integer array nums and a non-negative integer k. A sequence of integers seq is called good if there are at most k indices i in the range [0, seq.length - 2] such that seq[i] != seq[i + 1]. Return the maximum possible length of a good subsequence of nums.
ArrayHash TableDynamic Programming
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Problem Breakdown
Understanding the Find the Maximum Length of a Good Subsequence II Problem
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Problem Statement
You are given an integer array nums and a non-negative integer k. A sequence of integers seq is called good if there are at most k indices i in the range [0, seq.length - 2] such that seq[i] != seq[i + 1]. Return the maximum possible length of a good subsequence of nums.
HardProblem #3177
LeetCodeFind the Maximum Length of a Good Subsequence II
Related Topics
ArrayHash TableDynamic Programming
How Phantom Code Helps
Get real-time assistance for Find the Maximum Length of a Good Subsequence II problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
nums = [1,2,1,1,3], k = 2
Output
4
# Example 2
Input
nums = [1,2,3,4,5,1], k = 0
Output
2
Constraints
1 <= nums.length <= 5 * 103
1 <= nums[i] <= 109
0 <= k <= min(50, nums.length)
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Solve Find the Maximum Length of a Good Subsequence II — You are given an integer array nums and a non-negative integer k. A sequence of ...
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def solve(input):
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Frequently Asked Questions
Common questions about solving Find the Maximum Length of a Good Subsequence II and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Find the Maximum Length of a Good Subsequence 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 Find the Maximum Length of a Good Subsequence 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 Find the Maximum Length of a Good Subsequence 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 Find the Maximum Length of a Good Subsequence 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 Find the Maximum Length of a Good Subsequence 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 Find the Maximum Length of a Good Subsequence II 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 Find the Maximum Length of a Good Subsequence 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 Find the Maximum Length of a Good Subsequence 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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