Top "Hashtable" questions

How Do I Choose Between a Hash Table and a Trie (Prefix Tree)?

So if I have to choose between a hash table or a prefix tree what are the discriminating factors that …

algorithm data-structures hashtable trie

Hashtable in C++?

I usually use C++ stdlib map whenever I need to store some data associated with a specific type of value (…

c++ performance map hashtable complexity-theory

Multi-valued hashtable in Java

Is it possible to have multiple values for the same key in a hash table? If not, can you suggest …

java collections map hashtable multimap

What hashing function does Java use to implement Hashtable class?

From the book CLRS ("Introduction to Algorithms"), there are several hashing functions, such as mod, multiply, etc. What hashing function …

java algorithm hashtable hash

Hash table - why is it faster than arrays?

In cases where I have a key for each element and I don't know the index of the element into …

performance algorithm hash hashtable

How can I enumerate a hashtable as key-value pairs / filter a hashtable by a collection of key values

Editor's note: This question has a complicated history, but boils down to this: * To learn how to enumerate the entries …

powershell hashtable

Hashtable with multiple values for single key

I want to store multiple values in single key like: HashTable obj = new HashTable(); obj.Add("1", "test"); obj.Add("1", "Test1"); …

c# hashtable multiple-value

Hash tables in MATLAB

Does MATLAB have any support for hash tables? Some background I am working on a problem in Matlab that requires …

matlab hashtable

How do you pass a hash table to a function in PowerShell?

When passing a hash table to my PowerShell function, it complains that it receives an object. Function ExtendHash(){ param( [hashtable] $…

powershell hashtable

Map list onto dictionary

Is there a way to map a list onto a dictionary? What I want to do is give it a …

python list functional-programming hashtable