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How to Solve Maximum Score of Non-overlapping Intervals Problem
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LeetCode ProblemMaximum Score of Non-overlapping Intervals
You are given a 2D integer array intervals, where intervals[i] = [li, ri, weighti]. Interval i starts at position li and ends at ri, and has a weight of weighti. You can choose up to 4 non-overlapping intervals. The score of the chosen intervals is defined as the total sum of their weights. Return the lexicographically smallest array of at most 4 indices from intervals with maximum score, representing your choice of non-overlapping intervals. Two intervals are said to be non-overlapping if they do not share any points. In particular, intervals sharing a left or right boundary are considered overlapping.
ArrayBinary SearchDynamic ProgrammingSorting
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Problem Breakdown
Understanding the Maximum Score of Non-overlapping Intervals Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are given a 2D integer array intervals, where intervals[i] = [li, ri, weighti]. Interval i starts at position li and ends at ri, and has a weight of weighti. You can choose up to 4 non-overlapping intervals. The score of the chosen intervals is defined as the total sum of their weights. Return the lexicographically smallest array of at most 4 indices from intervals with maximum score, representing your choice of non-overlapping intervals. Two intervals are said to be non-overlapping if they do not share any points. In particular, intervals sharing a left or right boundary are considered overlapping.
HardProblem #3414
LeetCodeMaximum Score of Non-overlapping Intervals
Related Topics
ArrayBinary SearchDynamic ProgrammingSorting
How Phantom Code Helps
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Examples
# Example 1
Input
intervals = [[1,3,2],[4,5,2],[1,5,5],[6,9,3],[6,7,1],[8,9,1]]
Output
[2,3]
# Example 2
Input
intervals = [[5,8,1],[6,7,7],[4,7,3],[9,10,6],[7,8,2],[11,14,3],[3,5,5]]
Output
[1,3,5,6]
Constraints
1 <= intevals.length <= 5 * 104
intervals[i].length == 3
intervals[i] = [li, ri, weighti]
1 <= li <= ri <= 109
1 <= weighti <= 109
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Solve Maximum Score of Non-overlapping Intervals — You are given a 2D integer array intervals, where intervals[i] = [li, ri, weight...
Here's the optimal approach using Array:
def solve(input):
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Frequently Asked Questions
Common questions about solving Maximum Score of Non-overlapping Intervals and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Maximum Score of Non-overlapping Intervals 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 Maximum Score of Non-overlapping Intervals?
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 Maximum Score of Non-overlapping Intervals?
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 Maximum Score of Non-overlapping Intervals 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 Maximum Score of Non-overlapping Intervals 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 Maximum Score of Non-overlapping Intervals 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 Maximum Score of Non-overlapping Intervals 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 Maximum Score of Non-overlapping Intervals 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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