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Graph Valid Tree
medium
Description
AI Assistance
Solution
Test Cases
Test Result
Submissions
Canvas
Graph Valid
Tree
Given n nodes labeled from 0 to n-1 and a list of edges, determine if these edges form a valid tree.
Examples
Example 1
Input:
[5,[[0,1],[0,2],[0,3],[1,4]]]
Output:
true
Example 2
Input:
[5,[[0,1],[1,2],[2,3],[1,3],[1,4]]]
Output:
false
Hints
Hint 1
A valid tree has exactly n-1 edges and no cycles.
Hint 2
Use Union-Find (DSU) to check for cycles.
Hint 3
Alternatively, use BFS/DFS to check connectivity.
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Graph Valid Tree
Given n nodes labeled from 0 to n-1 and a list of edges, determine if these edges form a valid tree.