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Data Structures & AlgorithmsComplexity analysis up to graphs and DP.Operating SystemsProcesses, scheduling, memory and concurrency.Database Management SystemsRelational modelling, transactions and indexing.Computer NetworksFrom wires and radio waves up to the web.

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Data Structures & Algorithms

Python Essentials1

Arrays & Strings4

Searching & Sorting14

String Algorithms4

Stacks & Queues2

Heaps & Priority Queues1

Graphs and Traversal
Dijkstra & Shortest Paths
Union-Find & Topological Sort
Minimum Spanning Trees: Prim's and Kruskal's

Greedy & Backtracking2

Dynamic Programming5

Bit Manipulation1

Advanced Structures4

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Data Structures & Algorithms

Python Essentials1

Arrays & Strings4

Searching & Sorting14

String Algorithms4

Stacks & Queues2

Heaps & Priority Queues1

Graphs and Traversal
Dijkstra & Shortest Paths
Union-Find & Topological Sort
Minimum Spanning Trees: Prim's and Kruskal's

Greedy & Backtracking2

Dynamic Programming5

Bit Manipulation1

Advanced Structures4

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Dijkstra & Shortest Paths

BFS finds the fewest edges. When edges have weights, you need something smarter.

11 min readUpdated 2026-09-01graphsdijkstrashortest-path