Computer Science
Binary Search Arena
Interactive decision arena to practice low/high/mid updates, target comparisons, and search-window elimination.
binary-searcharraysdivide-and-conqueralgorithms
Interactive Library
Learn by exploring, building, and trying it yourself.
Browse the complete catalog of hands-on labs and visual explainers. One featured lesson is open to everyone each week; free accounts can open three lessons each month, and Plus unlocks them all.
Search Results
6 results
Computer ScienceCommunity
Binary Tree Inorder Traversal
An interactive lesson that teaches inorder traversal with concept cards, a step-by-step playground, and a scored quiz.
treesbinary-treetraversalinorder
Computer ScienceCommunity
The Stack Data Structure
An interactive lesson covering the definition of stacks, LIFO behavior, key operations, and real-world applications.
data-structuresstacklifoalgorithms
Computer ScienceCommunity
Binary Tree Preorder Traversal
An interactive lesson covering preorder traversal with concept cards, a step-by-step tree playground, and a scored quiz.
binary-treetree-traversalpreorderdata-structures
Computer Science
Java Superclasses and Subclasses Lab
Interactive Java inheritance lab for superclass/subclass relationships, method overriding, and super calls.
javaoopinheritancesuperclass
Computer Science
TCP Three-Way Handshake Lab
Interactive packet-by-packet simulator for SYN, SYN-ACK, ACK sequencing, retransmission recovery, and closed-port resets.
tcpnetworkingthree-way-handshakesyn