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How to Solve Minimum Number of Operations to Sort a Binary Tree by Level Problem
Master the Minimum Number of Operations to Sort a Binary Tree by Level LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsMedium#2471
LeetCode ProblemMinimum Number of Operations to Sort a Binary Tree by Level
You are given the root of a binary tree with unique values. In one operation, you can choose any two nodes at the same level and swap their values. Return the minimum number of operations needed to make the values at each level sorted in a strictly increasing order. The level of a node is the number of edges along the path between it and the root node.
TreeBreadth-First SearchBinary Tree
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Problem Breakdown
Understanding the Minimum Number of Operations to Sort a Binary Tree by Level Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are given the root of a binary tree with unique values. In one operation, you can choose any two nodes at the same level and swap their values. Return the minimum number of operations needed to make the values at each level sorted in a strictly increasing order. The level of a node is the number of edges along the path between it and the root node.
MediumProblem #2471
LeetCodeMinimum Number of Operations to Sort a Binary Tree by Level
Related Topics
TreeBreadth-First SearchBinary Tree
How Phantom Code Helps
Get real-time assistance for Minimum Number of Operations to Sort a Binary Tree by Level problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
root = [1,4,3,7,6,8,5,null,null,null,null,9,null,10]
Output
3
# Example 2
Input
root = [1,3,2,7,6,5,4]
Output
3
# Example 3
Input
root = [1,2,3,4,5,6]
Output
0
Constraints
The number of nodes in the tree is in the range [1, 105].
1 <= Node.val <= 105
All the values of the tree are unique.
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Solve Minimum Number of Operations to Sort a Binary Tree by Level — You are given the root of a binary tree with unique values. In one operation, yo...
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def solve(input):
# Optimal O(n) solution
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Time: O(n) | Space: O(n)
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Frequently Asked Questions
Common questions about solving Minimum Number of Operations to Sort a Binary Tree by Level and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Minimum Number of Operations to Sort a Binary Tree by Level 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 Minimum Number of Operations to Sort a Binary Tree by Level?
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 Minimum Number of Operations to Sort a Binary Tree by Level?
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 Minimum Number of Operations to Sort a Binary Tree by Level 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 Minimum Number of Operations to Sort a Binary Tree by Level 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 Minimum Number of Operations to Sort a Binary Tree by Level 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 Minimum Number of Operations to Sort a Binary Tree by Level 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 Minimum Number of Operations to Sort a Binary Tree by Level 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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