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Hashmaps

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Hashmaps

#hashmaps·0 followers·11 articles

Hashmaps

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Subhendu Kumar Jena

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Tennis Kumar C

leetcode-journey.hashnode.dev·Mar 02, 2025

Mar 02, 2025

Kicking Off: The First Day of the Grind

💻 Problems Solved:✅ Contains Duplicate (Easy)✅ Valid Anagram (Easy)✅ Two Sum (Easy)✅ Group Anagrams (Medium) 🔍 Key Takeaways: Hashing is powerful! Used HashMaps (or Sets) for quick lookups in most problems. Sorting can simplify things. In "Valid ...

Kicking Off: The First Day of the Grind

Discuss·6 reads

Anurag Srivastava

Anurag Srivastava

javenture.hashnode.dev·Feb 19, 2025

Feb 19, 2025

Two Sum Problem

Cracking the Two Sum Problem: Brute Force, HashMap, and Sorting Approaches The Two Sum problem is a classic coding interview question: Given an array of integers nums and a target integer target, find the indices of the two numbers in nums that add u...

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two-sum-problem

Vineeth Chivukula

Vineeth Chivukula

vineethchivukula.hashnode.dev·Jun 24, 2024

Jun 24, 2024

Understanding Java HashMap for DSA

A HashMap in Java is a part of the Java Collections Framework and provides a way to store key-value pairs, where keys are unique. It is part of the java.util package and implements the Map interface. The HashMap class allows null values and the null ...

Discuss·8 reads

Sahil Jagtap

sahiljagtap.hashnode.dev·Jun 18, 2024

Jun 18, 2024

Dealing with Array & Hashing Problems: Essential Tips and Tricks: Part 1

In this article, we will explore arrays and hashing problems with the top 5 famous challenges. If you've ever been frustrated by dynamic arrays or hashing problems on platforms like LeetCode, don't worry! After reading this article, you'll master the...

Dealing with Array & Hashing Problems: Essential Tips and Tricks: Part 1

Discuss·1 like·9 reads

Algorithms Series by Sahil

Partha Choudhury

Partha Choudhury

blog.partha51613.com·Apr 26, 2024

Apr 26, 2024

Internal workings of a HashMap: How it works?

A HashMap is a part of the Java's Collection and is used to store key-value pairs. Each key is mapped to a single value, and while duplicate keys are not allowed, duplicate values are permitted. We will learn about how a HashMap works internally, how...

Discuss·41 reads

Java Collections Framework

Anushka rangari

Anushka rangari

anushka9dev.hashnode.dev·Feb 09, 2024

Feb 09, 2024

HashMap in JavaScript

what is HashMap ? HashMap is a data Structure that can store data in key value pairs/ HashMap remembers the original insertion order of keys . HashMap has a property that represents the size of the map. Map Methods MethodDescription new M...

HashMap in JavaScript

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Diego hernandez

Diego hernandez

diegocode.hashnode.dev·Dec 26, 2023

Dec 26, 2023

What are Hash Tables?

Otherwise known as hash map, hash, and dictionary. A Hash Table is a data structure that organizes data for fast lookups; finding a value for a given key is fast with hash tables on average. A hash table is much like an array, except that it lets you...

What are Hash Tables?

Discuss·11 reads

Kallol Bairagi

kallolbairagi.hashnode.dev·Oct 02, 2023

Oct 02, 2023

#1.Two Sum [LeetCode Grind 75 in Rust]

use std::collections::HashMap; impl Solution { pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> { let mut map_of_numbers = HashMap::with_capacity(nums.len()); let mut ans: Vec<i32> = Vec::new(); for (i , &v) i...

Discuss·10 likes·22 reads

Leetcode Grind 75 in Rust

Vineet Anil Likhitkar

Vineet Anil Likhitkar

blog.vineetxd.me·Sep 26, 2023

Sep 26, 2023

HashMaps Deconstructed: Understanding the Magic Inside

HashMaps, a staple of computer science and software engineering, are versatile data structures that facilitate efficient key-value storage and retrieval. In this comprehensive guide, we will explore the intricacies of HashMaps, covering essential top...

HashMaps Deconstructed: Understanding the Magic Inside

Discuss·1 like·140 reads

Cindy Kandie

cindykandie.hashnode.dev·Jul 18, 2023

Jul 18, 2023

Hash Maps/Tables - Powerful Data Structure

Introduction Did you know that hash maps, also known as hash tables, are among the most popular and highly valued data structures? While they rely on underlying arrays, they offer a more efficient key-value pair storage system compared to arrays alon...

Hash Maps/Tables - Powerful Data Structure

Discuss·27 reads

data structures