What is the Difference Between List and Set?
🆚 Go to Comparative Table 🆚The primary difference between a list and a set is that a list allows duplicate elements and maintains their order, while a set ensures element uniqueness without any guaranteed order. Here are some key differences between lists and sets:
- Duplicate Elements: Lists allow duplicate values, while sets do not.
- Order: Lists maintain the order of elements, while sets do not have any guaranteed order (except for ordered variants like LinkedHashSet).
- Index Access: Lists support access by index (e.g., get(index)), while sets do not support index-based access.
- Examples: List examples include ArrayList and LinkedList, while set examples include HashSet and TreeSet.
In summary, lists are ordered collections of data that allow duplicate elements and support positional indexing, while sets are unordered collections that ensure uniqueness of elements and do not support positional indexing.
Comparative Table: List vs Set
Here is a table comparing the differences between lists and sets:
Feature | List | Set |
---|---|---|
Mutability | Mutable | Unordered collection of unique elements |
Order | Ordered collection of objects | Non-indexed sequence |
Duplicate Elements | Allows duplicate elements | Doesn't allow duplicate elements |
Accessibility | Access elements by their position | Position access to elements is not allowed |
Implementations | ArrayList, LinkedList, Vector, Stack | HashSet, LinkedHashSet |
In summary, lists are ordered collections of elements that allow duplicate elements and can be accessed by their position. On the other hand, sets are unordered collections of unique elements that do not allow duplicate elements, and position access to elements is not allowed.
- List vs Tuple
- Sit vs Set
- Subset vs Superset
- TreeSet vs HashSet
- Arrays vs Linked Lists
- Arrays vs Arraylists
- Stack vs Queue
- ArrayList vs LinkedList
- Reps vs Sets
- Take vs Get
- Singly Linked List vs Doubly Linked List
- Difference vs Different
- Dictionary vs Hashtable
- TreeSet vs TreeMap
- Arraylist vs Vector
- Subsets vs Proper Subsets
- Bibliography vs Reference List
- Type vs Kind
- Indexing vs Sorting