Stacks and Queues in Data Structures: A Beginner’s Guide Skip to article DS Code, Clearly. The DSA series ☾ The beginner’s guide · DSA series 03 Stacks and Queues in Data Structures Learn how stacks and queues organize data, what LIFO and FIFO mean, and how to build both data structures with JavaScript. YN November 8, 2026 8 min read Stack Last in Next First in LIFO & FIFO Queue First Next Last Stacks and queues are two fundamental data structures . Th...
Hash Maps and Sets in DSA: A Beginner’s Guide Skip to article DS Code, Clearly. DSA for Beginners · Part 4 ☾ DSA for beginners · Part 04 Hash maps & sets, made clear. Learn how hash maps and sets help organize data, check membership, and count values—with practical examples you can use in DSA problems. YN November 7, 2026 8 min read key → value fast lookup frequency count unique values MAPS & SETS In Part 1 , we introduced data structures and algorithms. In Part 2 , we learned to describe algorithm growt...