LeetCode 4085 | Find Root of a Colored Tree | Brute Force to Optimal | C++
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LeetCode 4085 | Find Root of a Colored Tree | Brute Force to Optimal | C++
86 просмотров · 9 дн. назад
Logic Mode
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86 просмотров · 9 дн. назад
LeetCode 4085: Find Root of a Colored Tree
Problem Link : https://leetcode.com/problems/find-ro...
Source Code : https://github.com/Krishnkantm/DSA-Co...
In this video, we solve Find Root of a Colored Tree using two approaches in C++: Brute Force and an optimized Graph-based approach.
Approaches Covered:
1. Brute Force: Check possible tree roots and validate the given edges against the color-based direction rules.
2. Optimal: Direct edges according to the color rules, calculate indegree and outdegree, and identify the unique root.
The solution also checks invalid color relationships, excessive outdegree, and multiple roots.
Key Concepts: Graphs, Trees, Directed Graph, Indegree, Outdegree, Root Detection, Brute Force, Graph Validation, DSA, C++
Optimal Time Complexity: O(N)
Optimal Space Complexity: O(N)
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