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How to Solve Type of Triangle Problem
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Easy#3024
LeetCode ProblemType of Triangle
You are given a 0-indexed integer array nums of size 3 which can form the sides of a triangle. Return a string representing the type of triangle that can be formed or "none" if it cannot form a triangle.
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Problem Breakdown
Understanding the Type of Triangle Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are given a 0-indexed integer array nums of size 3 which can form the sides of a triangle. Return a string representing the type of triangle that can be formed or "none" if it cannot form a triangle.
Examples
# Example 1
Input
nums = [3,3,3]
Output
"equilateral"
# Example 2
Input
nums = [3,4,5]
Output
"scalene"
Constraints
nums.length == 3
1 <= nums[i] <= 100
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Solve Type of Triangle — You are given a 0-indexed integer array nums of size 3 which can form the sides ...
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 Type of Triangle and using PhantomCodeAI during coding interviews.
How does PhantomCodeAI help with LeetCode problems during a coding interview?
PhantomCodeAI reads the problem from a screenshot or listens to it via audio, then generates a complete solution with a step-by-step approach and time/space complexity, so you can focus on explaining your reasoning rather than getting stuck on implementation.
Which programming languages does PhantomCodeAI support?
11 languages including Python, Java, C++, JavaScript, TypeScript, Go, Rust, Ruby, Swift, Kotlin, and C#. Set a preferred language to get idiomatic solutions.
Does PhantomCodeAI work with HackerRank, CodeSignal, and CoderPad?
Yes — it works alongside LeetCode, HackerRank, CodeSignal, CoderPad, and HackerEarth, plus any browser-based coding environment.
Can PhantomCodeAI handle follow-up questions and modifications?
Yes. Capture the modified problem by screenshot or audio and get an updated solution within seconds, including new edge cases and optimizations.
Is PhantomCodeAI detectable during live interviews?
PhantomCodeAI runs as a native desktop overlay that does not appear in screen shares, recordings, or proctoring software, and works with Zoom, Google Meet, Microsoft Teams, and major coding platforms.
Should I still practice these problems on my own first?
Yes. The most durable preparation is solving problems unaided first, then using AI afterward to review your approach, complexity, and missed edge cases — use it to debrief and learn, not to skip the reps.
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