PHP Euler Circuit: Find nodes of a Euler circuit and Hamiltonian path

This class can find nodes of a Euler circuit and Hamiltonian path.

It takes a list of nodes and its connections and computes the Euler circuit traversing the all nodes and returning to the initial without passing again in an already traversed node.

The class can return an array with the path of the Euler Circuit nodes.

It can also compute the Hamiltonian path by cleaning a path to include only nodes traversed once.