Hash Table

There are a good number of articles that articulate functional differences between HashMap, HashTable and ConcurrentHashMap. This post compares the performance behavior of these data structures through practical examples. If you don’t have patience to read the entire post, here is bottom line: When you confront with the decision of…

HASH TABLE, HASH FUNCTİON, HASH COLLECTION NEDİR? — Hash Table Nedir? Hash Table, key value mantığını kullanan bir veri yapısıdır. Çağırmak istediğimiz elemanın key’ini girdiğimizde value olarak verecektir. Hash Table yerine array’leri kullanamaz mıydık? Evet kullanabilirdik ama her elemanı tek tek aramamak için hash table kullanmalıyız. Linked-List konusunda bahsetmiştik. Mesela 10 milyon elemanlı bir linked-list’te aradığımız eleman sonuncu elemansa onun adresini…

Today I will go over my solution to another Leetcode easy question, Contains Duplicate Link to the Question: https://leetcode.com/problems/contains-duplicate/ My Solution: class Solution: def containsDuplicate(self, nums: List[int]) -> bool: hashmap = dict() for i in nums: if(i in hashmap): return True else: hashmap[i] = i return False

A Hash Table is a data structure in which the keys are mapped to values by means of a hashing function. A Hash Table is a data structure in which the keys are mapped to values by means of a hashing function. The hashing function takes on input, usually of…

What are Hash Tables? — In simple words, it is a data structure for storing data, that is really efficient when fetching data from it. How does it store data? There are many implementations possible for this data structure. But let’s see the very common and basic implementation of Hash tables. Technically, a Hash Table is an Array. We insert…

Most modern programming languages include the associative array data type, which is a collection of key-value pairs with the operations of lookup, insertion, and deletion defined over the collection. Different languages use different terms for associative arrays. Python has dictionaries, Haskell has maps, Ruby has hashes, Rust has hash maps…

ㅤㅤㅤ — 식당에 갔는데 다음과 같은 메뉴가 있다고 가정하자. menu = [["pasta", 17000], ["steak", 36000], ["wine", 72000]] 첫 번째 원소는 식당에서 판매하는 메뉴이고, 두 번째 원소는 그 메뉴의 가격을 담고있다. 만약, 위 배열이 정렬되어 있지 않다면 가격을 검색 했을 때 선형 검 …

In JavaScript, objects are stored as key value pairs. This is an example of inbuilt hash table in the language itself. If you want to customize hash table and create your own you can. Hash tables can be implemented as a linear or non-linear data structure. Most of the time…

Что такое кэширование? В вычислительной технике кэш — это высокоскоростной уровень хранения данных, где хранится подмножество данных, обычно временных. Благодаря этому будущие запросы на эти данные обрабатываются быстрее, чем при запросе доступа к основному хранилищу. Кэширование позволяет эффективно переиспользовать ранее полученную или вычисленную информацию. Системы кэширования хранятся на оборудовании с более быстрым доступом…