Read the explanation, compare the Python, C++, and Java implementations, then step through the same example in the animated demonstration.
Data Structures and Algorithms begins with storing values and moves into searching and sorting. Operating Systems begins with the role of the OS and follows programs through the kernel, scheduler, and memory manager.
Start with ways to store data, then learn the algorithms used to search, sort, and process it.
Follow a program from an application request into the kernel, CPU scheduler, and memory system.
Start by seeing how an array, linked list, stack, queue, tree, graph, hash table, heap, and trie organize values. Then connect those structures to sorting, searching, traversal, recursion, greedy choices, and dynamic programming.
Learn how the kernel handles system calls, schedules processes and threads, protects shared data, translates virtual memory, stores files, and communicates with devices.
Pause before each animation step and predict what changes next. After the example, rewrite the code without looking and test it with a smaller input. That turns the page from reading material into practice.