tree vs graph
A tree and a graph are both data structures used in computer science. A tree is a hierarchical structure consisting of nodes connected by edges. It has a root node at the top and child nodes below it, forming a branching structure. It does not contain any loops or cycles. A graph, on the other hand, is a collection of nodes connected by edges. It can be either directed (having arrows indicating the direction of connections) or undirected (connections have no direction). Unlike a tree, a graph may contain loops or cycles. The main difference between a tree and a graph is that a tree is always connected, meaning there is a single path between any two nodes, while a graph can have disconnected nodes or multiple paths between nodes. Additionally, a tree has a defined hierarchical structure with a root and child nodes, whereas a graph does not have such restrictions. In summary, a tree is a special type of graph with a hierarchical structure and no loops, while a graph is a more general structure that can contain loops and may not have a specific hierarchical organization.
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