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How to Solve Find Indices of Stable Mountains Problem
Master the Find Indices of Stable Mountains LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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LeetCode ProblemFind Indices of Stable Mountains
There are n mountains in a row, and each mountain has a height. You are given an integer array height where height[i] represents the height of mountain i, and an integer threshold. A mountain is called stable if the mountain just before it (if it exists) has a height strictly greater than threshold. Note that mountain 0 is not stable. Return an array containing the indices of all stable mountains in any order.
Array
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Problem Breakdown
Understanding the Find Indices of Stable Mountains Problem
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Problem Statement
There are n mountains in a row, and each mountain has a height. You are given an integer array height where height[i] represents the height of mountain i, and an integer threshold. A mountain is called stable if the mountain just before it (if it exists) has a height strictly greater than threshold. Note that mountain 0 is not stable. Return an array containing the indices of all stable mountains in any order.
EasyProblem #3285
LeetCodeFind Indices of Stable Mountains
Related Topics
Array
How Phantom Code Helps
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Examples
# Example 1
Input
height = [1,2,3,4,5], threshold = 2
Output
[3,4]
# Example 2
Input
height = [10,1,10,1,10], threshold = 3
Output
[1,3]
# Example 3
Input
height = [10,1,10,1,10], threshold = 10
Output
[]
Constraints
2 <= n == height.length <= 100
1 <= height[i] <= 100
1 <= threshold <= 100
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Solve Find Indices of Stable Mountains — There are n mountains in a row, and each mountain has a height. You are given an...
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 Find Indices of Stable Mountains and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Find Indices of Stable Mountains 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 Find Indices of Stable Mountains?
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 Find Indices of Stable Mountains?
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 Find Indices of Stable Mountains 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 Find Indices of Stable Mountains 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 Find Indices of Stable Mountains 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 Find Indices of Stable Mountains 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 Find Indices of Stable Mountains 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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