The Fast & Slow pointer approach, also known as the Hare & Tortoise algorithm, is a pointer algorithm that uses two pointers which move through the array (or sequence/LinkedList) at different speeds. This approach is quite useful when dealing with cyclic LinkedList s or arrays.

Nov 2, 2023 · In this blog, we will explore 20 essential coding patterns that are pivotal for acing coding interviews. We will delve into the pros and cons of each pattern, providing you with a balanced view to help you make informed decisions during your interviews.

Apr 25, 2025 · DSA (Data Structures and Algorithms) is the study of organizing data efficiently using data structures like arrays, stacks, and trees, paired with step-by-step procedures (or algorithms) to solve problems effectively. Data structures manage how data is stored and accessed, while algorithms focus on processing this data. Why to Learn DSA?

May 29, 2019 · Here, I’ve laid out the top 14 patterns that can be used to solve any coding interview question, as well as how to identify each pattern, and some example questions for each. This just touches the surface — I strongly recommend checking out Grokking Coding Interview Patterns in Java for comprehensive explanations, examples, and coding practice.

Jul 28, 2023 · Here are 20 coding patterns to ensure your success. 1. Two Pointer Technique: This technique is commonly applied on sorted arrays or linked lists to find pairs or reverse elements. It is an ideal...

Sep 6, 2024 · By breaking down problems into manageable steps — such as analyzing the input and return values, identifying common problem patterns, and choosing efficient algorithms like dynamic programming...

Apr 28, 2025 · Design patterns describe the structure for a design solution, with the details filled in for any given problem. Design patterns are a bit like data structures: Each one provides costs and benefits, which implies that tradeoffs are possible.

In this comprehensive guide, we’ll explore the importance of pattern recognition in coding, strategies for building your mental algorithm library, and how this skill can significantly boost your performance in technical interviews and real-world programming tasks.

Design patterns provide ways to structure software components into systems that are flexible, extensible, and have a high degree of reusability. The state pattern, the null object pattern, and the singleton pattern are used to implement common data structures such as lists and trees.

In this article, I’ll explore some of the most widely used patterns in data structures and algorithms that have proven invaluable in problem-solving. While topics like Graphs, Disjoint...