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How to Solve Maximum Subarray Sum with One Deletion Problem
Master the Maximum Subarray Sum with One Deletion LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsMedium#1186
LeetCode ProblemMaximum Subarray Sum with One Deletion
Given an array of integers, return the maximum sum for a non-empty subarray (contiguous elements) with at most one element deletion. In other words, you want to choose a subarray and optionally delete one element from it so that there is still at least one element left and the sum of the remaining elements is maximum possible. Note that the subarray needs to be non-empty after deleting one element.
ArrayDynamic Programming
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Problem Breakdown
Understanding the Maximum Subarray Sum with One Deletion Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
Given an array of integers, return the maximum sum for a non-empty subarray (contiguous elements) with at most one element deletion. In other words, you want to choose a subarray and optionally delete one element from it so that there is still at least one element left and the sum of the remaining elements is maximum possible. Note that the subarray needs to be non-empty after deleting one element.
MediumProblem #1186
LeetCodeMaximum Subarray Sum with One Deletion
Related Topics
ArrayDynamic Programming
How Phantom Code Helps
Get real-time assistance for Maximum Subarray Sum with One Deletion problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
arr = [1,-2,0,3]
Output
4
# Example 2
Input
arr = [1,-2,-2,3]
Output
3
# Example 3
Input
arr = [-1,-1,-1,-1]
Output
-1
Constraints
1 <= arr.length <= 105
-104 <= arr[i] <= 104
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Solve Maximum Subarray Sum with One Deletion — Given an array of integers, return the maximum sum for a non-empty subarray (con...
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 Maximum Subarray Sum with One Deletion and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Maximum Subarray Sum with One Deletion 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 Subarray Sum with One Deletion?
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 Subarray Sum with One Deletion?
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 Subarray Sum with One Deletion 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 Subarray Sum with One Deletion 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 Subarray Sum with One Deletion 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 Subarray Sum with One Deletion 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 Subarray Sum with One Deletion 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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