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How to Solve Shortest Unsorted Continuous Subarray Problem
Master the Shortest Unsorted Continuous Subarray LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsMedium#581
LeetCode ProblemShortest Unsorted Continuous Subarray
Given an integer array nums, you need to find one continuous subarray such that if you only sort this subarray in non-decreasing order, then the whole array will be sorted in non-decreasing order. Return the shortest such subarray and output its length.
ArrayTwo PointersStackGreedySortingMonotonic Stack
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Problem Breakdown
Understanding the Shortest Unsorted Continuous Subarray Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
Given an integer array nums, you need to find one continuous subarray such that if you only sort this subarray in non-decreasing order, then the whole array will be sorted in non-decreasing order. Return the shortest such subarray and output its length.
MediumProblem #581
LeetCodeShortest Unsorted Continuous Subarray
Related Topics
ArrayTwo PointersStackGreedySortingMonotonic Stack
How Phantom Code Helps
Get real-time assistance for Shortest Unsorted Continuous Subarray problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
nums = [2,6,4,8,10,9,15]
Output
5
# Example 2
Input
nums = [1,2,3,4]
Output
0
# Example 3
Input
nums = [1]
Output
0
Constraints
1 <= nums.length <= 104
-105 <= nums[i] <= 105
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Solve Shortest Unsorted Continuous Subarray — Given an integer array nums, you need to find one continuous subarray such that ...
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 Shortest Unsorted Continuous Subarray and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Shortest Unsorted Continuous Subarray 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 Shortest Unsorted Continuous Subarray?
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 Shortest Unsorted Continuous Subarray?
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 Shortest Unsorted Continuous Subarray 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 Shortest Unsorted Continuous Subarray 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 Shortest Unsorted Continuous Subarray 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 Shortest Unsorted Continuous Subarray 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 Shortest Unsorted Continuous Subarray 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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