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What are the basics of data structures?
What are trees and graphs used for?
Trees and graphs are used to represent hierarchical relationships between data elements. A tree is a type of graph where each node has a maximum of one parent but can have multiple children. Trees are widely used to represent hierarchical data such as the file system. A graph, on the other hand, allows any node to be connected to any other node. Graphs are used to represent complex relationships between data elements, such as in social networks or transportation systems.