#algorithms Development Tutorials & Tips | Roast Dev

Recursion, Tail Recursion, and Recursive Data Structures: A Deep Dive 😎💻

IntroductionRecursion is one of those things that looks like a simple concept on paper but can quickly turn into a labyrinth of confusion 😵. Yet, it's one of the most powerful tools in a programmer...

09.03.2025 0 Read More

Merging Two Sorted Linked List in Java

Blog Post: Merging Two Sorted Linked Lists - My In-Place Solution When I first encountered the "Merge Two Sorted Lists" problem, I was excited to work with linked lists—a data structure tha...

09.03.2025 0 Read More

Adjacency Matrix , When?

When to use Adjacency Matrix ? -> If two nodes connected or not TC - O(1) If we do it by adjacency list or edge list we have to use loop . The complexity will become O(N) . ...

10.03.2025 0 Read More

Why Bellmen-Ford working but Dijkstra not?

Bellman-Ford runs for at most n−1 iterations to relax all edges, ensuring the shortest paths are found. After this, it performs one more check to detect negative weight cycles. In contrast, Dijkstra...

10.03.2025 0 Read More

3306. Count of Substrings Containing Every Vowel and K Consonants II

3306. Count of Substrings Containing Every Vowel and K Consonants IIDifficulty: MediumTopics: Hash Table, String, Sliding WindowYou are given a string word and a non-negative integer k.Return the tota...

10.03.2025 0 Read More

Accountable Privacy in Web3 (3/4)

Now that we've covered the key cryptographic concepts in Web3, let's try and implement them in code! We'll start the article by setting up an Elliptic Curve, a key primitive in many modern encryption ...

10.03.2025 0 Read More

LeetCode Number of Substrings Containing All Three Characters: Sliding Window in Golang

Today's LeetCode daily challenge was so fun to solve: Number of Substrings Containing All Three Characters. What are we trying to do? We have a string s that's build using only 3 characters:...

11.03.2025 0 Read More

1358. Number of Substrings Containing All Three Characters

1358. Number of Substrings Containing All Three CharactersDifficulty: MediumTopics: Hash Table, String, Sliding WindowGiven a string s consisting only of characters a, b and c.Return the number of sub...

11.03.2025 0 Read More

Best Time to Buy and Sell Stock in Java

Solving the Best Time to Buy and Sell Stock Problem in Java When it comes to algorithmic problem-solving, one of the classic challenges that developers encounter is the "Best Time to Buy and ...

12.03.2025 0 Read More

Understanding Advanced Promise Patterns in JavaScript

Understanding Advanced Promise Patterns in JavaScript If you're looking to master JavaScript's asynchronous programming patterns, you'll want to check out my JavaScript Promise Patterns repos...

12.03.2025 0 Read More

Recursion, Tail Recursion, and Recursive Data Structures: A Deep Dive 😎💻

Merging Two Sorted Linked List in Java

Adjacency Matrix , When?

Why Bellmen-Ford working but Dijkstra not?

3306. Count of Substrings Containing Every Vowel and K Consonants II

Accountable Privacy in Web3 (3/4)

LeetCode Number of Substrings Containing All Three Characters: Sliding Window in Golang

1358. Number of Substrings Containing All Three Characters

Best Time to Buy and Sell Stock in Java

Understanding Advanced Promise Patterns in JavaScript

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