Introduction

pyhashmaps is a fully annotated Python package which has several functional hashmap classes for educational purposes.

All classes support common operations on MutableMapping type.

Here are the relationships between components of this package:

classDiagram
class MutableMapping
class BaseHM
class OpenAddressingHM {list slots}
class LinearProbingHM
class QuadraticProbingHM
class DoubleHashingHM
class SeparateChainingHM {list[Chain] slots}
class DynamicArrayHM {list[DynamicArray] slots}
class LinkedListHM {list[LinkedList] slots}
class BSTHM {list[BinarySearchTree] slots}
MutableMapping <|-- BaseHM
BaseHM <|-- OpenAddressingHM
BaseHM <|-- SeparateChainingHM
OpenAddressingHM <|-- LinearProbingHM
OpenAddressingHM <|-- QuadraticProbingHM
OpenAddressingHM <|-- DoubleHashingHM
SeparateChainingHM <|-- DynamicArrayHM
SeparateChainingHM <|-- LinkedListHM
SeparateChainingHM <|-- BSTHM

Loading

classDiagram
class Chain {
<<interface>>
find()
insert()
delete()
}
class DynamicArray
class LinkedList
class BinarySearchTree
Chain <|-- DynamicArray
Chain <|-- LinkedList
Chain <|-- BinarySearchTree

Loading

Requirements

It's tested on Python 3.10 & 3.11.

Installation

If you have git installed:

pip install git+https://github.com/amirsoroush/Python_Hashmaps.git

Otherwise:

pip install https://github.com/amirsoroush/Python_Hashmaps/tarball/main

Usage

It has the same interface as the built-in dict class.

>>>frompyhashmapsimport (
... LinearProbingHashMap,
... QuadraticProbingHashMap,
... DoubleHashingHashMap,
... DynamicArrayHashMap,
... LinkedListHashMap,
... BSTHashMap,
... )
>>>>>>hashmap=LinearProbingHashMap()
>>>hashmap=LinearProbingHashMap[str, int]()
>>>hashmap["a"] =10>>>hashmapLinearProbingHashMap({'a': 10})
>>>hashmap.update({"b": 20, "c": 30})
>>>len(hashmap)
3>>>fork, vinhashmap.items():
... print(k, v)
... c30a10b20>>>hashmap.clear()
>>>