Примери за използване на Hash-table на Английски и техните преводи на Български
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Colloquial
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Official
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Medicine
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Ecclesiastic
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Ecclesiastic
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Computer
Set, implemented with a hash-table(HashSet).
Use a hash-table, when you want to add and search by key very fast.
The load factor for this hash-table would be 3/m.
We know that the fastest search is implemented with a hash-table.
Implement the data structure hash-table in a class HashTable.
We know that the fastest search is implemented with a hash-table.
At the figure we have a hash-table with 3 elements and capacity m.
They have the same semantics,because here we use a hash-table again.
MultiDictionary- it is a hash-table allowing key duplicates.
So far so good, but what are we going to keep as a key and value in the hash-table?
Unlike them the hash-table can search and add new elements very fast.
This operation is slow because it checks every element of the hash-table(like searching in a list).
We are choosing a hash-table, because we can quickly search by course name in it.
On the figure bellow it is shown an example scheme of a hash-table using cuckoo hashing.
At the figure there is a hash-table T with capacity m and hash-function hash(key).
Hash-table is recommended to be used every time we need fast addition and fast search by key.
It seems this could solve our problem andwe will use only one hash-table for all the queries.
Implement a hash-table, allowing the maintenance of more than one value for a specific key.
It makes sense,because the position of a given key depends on the current capacity of the hash-table.
Creating a hash-table is done by calling some of the constructors of Dictionary.
This way we will avoid the unneeded expansions of the hash-table and we will achieve better performance.
Actually, this is the only advantage of this dictionary implementation compared to the hash-table.
Hash-table is considered to be the fastest data structure, which provides adding and searching by key.
Now let's give an example of how we can use our implementation of hash-table and its iterator.
For example hash-table- it is not appropriate in this case, because the structure“parts” is not of the key-value type.
Therefore when using a constant 42 for hash-code our hash-table turns into a linear list and it becomes very inefficient.
As in the hash-table, the basic operations in the data structure HashSet are implemented with a constant complexity O(1).
The operation is very fast,because the algorithm for searching an element by key in the hash-table is with complexity about O(1).
The main advantage of the hash-table over the other data structures is a very quick searching and addition.
Now we are able to write the code, which reads the students andtheir courses and stores them in a hash-table, which keeps a list of students by a course name(Dictionary).