For our purposes I will propose 5 classes of data structures. These being the array, list, tree, hash, and graph. Arrays Arrays are one of the most basic data structures and are characterized by direct access to every element in the structure. It is easy to picture them as a line of numbered buckets where you can place an element into or remove an element from any bucket. Lists Lists are another very basic data structure. In a list each node has one of more connections to other nodes. Access to the list is only at one or both ends. From any given element you can access any element which you have a connection to. Here is an example of a simple list. Trees Trees are similar to lists in that each element has connections to other elements but in a tree the connections are more structured. Each element in a tree can have children. The number of children an element can have is an important property of a tree. The top element in ...