GeeksforGeeks
A huge collection of articles on data structures, algorithms and core CS subjects like operating systems, DBMS, computer networks and OOP, usually with code in several languages. It is handy for revising a university topic or finding a worked example of a specific algorithm. Quality varies a lot by article because many are community written, so cross-check anything surprising against a textbook or official reference. Articles are free; the site also sells courses.
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A huge collection of articles on data structures, algorithms and core CS subjects like operating systems, DBMS, computer networks and OOP, usually with code in several languages. It is handy for revising a university topic or finding a worked example of a specific algorithm. Quality varies a lot by article because many are community written, so cross-check anything surprising against a textbook or official reference. Articles are free; the site also sells courses.
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