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How to Solve Maximum Sum Obtained of Any Permutation Problem
Master the Maximum Sum Obtained of Any Permutation LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsMedium#1589
LeetCode ProblemMaximum Sum Obtained of Any Permutation
We have an array of integers, nums, and an array of requests where requests[i] = [starti, endi]. The ith request asks for the sum of nums[starti] + nums[starti + 1] + ... + nums[endi - 1] + nums[endi]. Both starti and endi are 0-indexed. Return the maximum total sum of all requests among all permutations of nums. Since the answer may be too large, return it modulo 109 + 7.
ArrayGreedySortingPrefix Sum
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Problem Breakdown
Understanding the Maximum Sum Obtained of Any Permutation Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
We have an array of integers, nums, and an array of requests where requests[i] = [starti, endi]. The ith request asks for the sum of nums[starti] + nums[starti + 1] + ... + nums[endi - 1] + nums[endi]. Both starti and endi are 0-indexed. Return the maximum total sum of all requests among all permutations of nums. Since the answer may be too large, return it modulo 109 + 7.
MediumProblem #1589
LeetCodeMaximum Sum Obtained of Any Permutation
Related Topics
ArrayGreedySortingPrefix Sum
How Phantom Code Helps
Get real-time assistance for Maximum Sum Obtained of Any Permutation problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
nums = [1,2,3,4,5], requests = [[1,3],[0,1]]
Output
19
# Example 2
Input
nums = [1,2,3,4,5,6], requests = [[0,1]]
Output
11
# Example 3
Input
nums = [1,2,3,4,5,10], requests = [[0,2],[1,3],[1,1]]
Output
47
Constraints
n == nums.length
1 <= n <= 105
0 <= nums[i] <= 105
1 <= requests.length <= 105
requests[i].length == 2
0 <= starti <= endi < n
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Solve Maximum Sum Obtained of Any Permutation — We have an array of integers, nums, and an array of requests where requests[i] =...
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 Sum Obtained of Any Permutation and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Maximum Sum Obtained of Any Permutation 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 Sum Obtained of Any Permutation?
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 Sum Obtained of Any Permutation?
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 Sum Obtained of Any Permutation 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 Sum Obtained of Any Permutation 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 Sum Obtained of Any Permutation 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 Sum Obtained of Any Permutation 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 Sum Obtained of Any Permutation 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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