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How to Solve Length of Longest Subarray With at Most K Frequency Problem
Master the Length of Longest Subarray With at Most K Frequency LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsMedium#2958
LeetCode ProblemLength of Longest Subarray With at Most K Frequency
You are given an integer array nums and an integer k. The frequency of an element x is the number of times it occurs in an array. An array is called good if the frequency of each element in this array is less than or equal to k. Return the length of the longest good subarray of nums. A subarray is a contiguous non-empty sequence of elements within an array.
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Problem Breakdown
Understanding the Length of Longest Subarray With at Most K Frequency Problem
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Problem Statement
You are given an integer array nums and an integer k. The frequency of an element x is the number of times it occurs in an array. An array is called good if the frequency of each element in this array is less than or equal to k. Return the length of the longest good subarray of nums. A subarray is a contiguous non-empty sequence of elements within an array.
MediumProblem #2958
LeetCodeLength of Longest Subarray With at Most K Frequency
Related Topics
ArrayHash TableSliding Window
How Phantom Code Helps
Get real-time assistance for Length of Longest Subarray With at Most K Frequency problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
nums = [1,2,3,1,2,3,1,2], k = 2
Output
6
# Example 2
Input
nums = [1,2,1,2,1,2,1,2], k = 1
Output
2
# Example 3
Input
nums = [5,5,5,5,5,5,5], k = 4
Output
4
Constraints
1 <= nums.length <= 105
1 <= nums[i] <= 109
1 <= k <= nums.length
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Solve Length of Longest Subarray With at Most K Frequency — You are given an integer array nums and an integer k. The frequency of an elemen...
Here's the optimal approach using Array:
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 Length of Longest Subarray With at Most K Frequency and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Length of Longest Subarray With at Most K Frequency 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 Length of Longest Subarray With at Most K Frequency?
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 Length of Longest Subarray With at Most K Frequency?
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 Length of Longest Subarray With at Most K Frequency 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 Length of Longest Subarray With at Most K Frequency 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 Length of Longest Subarray With at Most K Frequency 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 Length of Longest Subarray With at Most K Frequency 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 Length of Longest Subarray With at Most K Frequency 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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