Challenge: Graph Valid Tree

Try to solve the Graph Valid Tree problem.

We'll cover the following


Given an undirected graph containing nn nodes labeled from 00 to n1n - 1, determine whether the graph is a valid tree or not. Return TRUE if the edges of the given graph make up a valid tree, and FALSE otherwise.

A graph is a valid tree when all the nodes are connected and there is no cycle between them.


Let nn be the number of nodes in the undirected graph, where:

  • 11 \leq nn 102 \leq 10^2

  • 00 \leq edgesedges 5×103\leq 5 \times 10^3

  • There are no repeated edges

  • There are no self-loops


Level up your interview prep. Join Educative to access 80+ hands-on prep courses.