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Este patrón de diseño perteneciente al grupo de comportamiento permite recorrer elementos de una colección sin exponer su representación ya sea pila, árbol, lista, etc.
En este repositorio nos encontramos con un tipo de estructura denominada grafos, donde se implementa diferentes formas de recorrerla, sin embargo, una forma eficiente de mejorar este código es aplicando iterator ya que nos va a permitir recorrer este grafo de una mejor forma.