List of data structures
This is a list of well-known data structures. For a wider list of terms, see list of terms relating to algorithms and data structures. For a comparison of running times for a subset of this list see comparison of data structures.
Data types
Primitive types
- Boolean, true or false.
- Character
- Floating-point numbers, limited-precision approximations of real number values.
- Including single-precision and double-precision IEEE 754 floats, among others
- Fixed-point numbers
- Integer, integral or fixed-precision values
- Reference (also called a pointer or handle), a small value referring to another object's address in memory, possibly a much larger one
- Enumerated type, a small set of uniquely named values
- Date Time, value referring to Date and Time
Composite types or non-primitive type
Abstract data types
- Container
- List
- Tuple
- Associative array, Map
- Multimap
- Set
- Multiset (bag)
- Stack
- Queue (example Priority queue)
- Double-ended queue
- Graph (example Tree, Heap)
Some properties of abstract data types:
Structure | Order | Unique |
---|---|---|
List | yes | no |
Associative array | no | keys (indexes) only |
Set | no | yes |
Stack | yes | no |
Multimap | no | no |
Multiset (bag) | no | no |
Queue | yes | no |
Order means the insertion sequence counts. Unique means that duplicate elements are not allowed, based on some inbuilt or, alternatively, user-defined rule for comparing elements.
Linear data structures
A data structure is said to be linear if its elements form a sequence.
Arrays
Lists
Trees
Trees are a subset of directed acyclic graphs.
Binary trees
- AA tree
- AVL tree
- Binary search tree
- Binary tree
- Cartesian tree
- Conc-tree list
- Left-child right-sibling binary tree
- Order statistic tree
- Pagoda
- Randomized binary search tree
- Red–black tree
- Rope
- Scapegoat tree
- Self-balancing binary search tree
- Splay tree
- T-tree
- Tango tree
- Threaded binary tree
- Top tree
- Treap
- WAVL tree
- Weight-balanced tree
Heaps
Bit-slice trees
In these data structures each tree node compares a bit slice of key values.
Multi-way trees
Space-partitioning trees
These are data structures used for space partitioning or binary space partitioning.
- Segment tree
- Interval tree
- Range tree
- Bin
- K-d tree
- Implicit k-d tree
- Min/max k-d tree
- Relaxed k-d tree
- Adaptive k-d tree
- Quadtree
- Octree
- Linear octree
- Z-order
- UB-tree
- R-tree
- R+ tree
- R* tree
- Hilbert R-tree
- X-tree
- Metric tree
- Cover tree
- M-tree
- VP-tree
- BK-tree
- Bounding interval hierarchy
- Bounding volume hierarchy
- BSP tree
- Rapidly exploring random tree
Hash-based structures
Graphs
Many graph-based data structures are used in computer science and related fields:
See also
- Purely functional data structure
- Blockchain, a hash-based chained data structure that can persist state history over time
External links
- Tommy Benchmarks Comparison of several data structures.