Data structures are structures that are used for storing data. Different data structures are useful for different reasons. Some allow quick searching or take up a minimal amount of memory. They can be quite useful for different algorithms.
“A stack is a last-in-first-out list data structure. That is, the last item inserted in the list...Stack
“Graphs can be represented in several ways. An adjacency list is a list of the graph's vertices...Graph
“A B+ tree is a data structure. It is essentially a B-tree, but the values only occur in the...B+ tree
“a Hashmap is a Map data structure. Like a list each item that is stored in a hashmap is stored...Hashmap