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⚙️AlgorithmIntermediate

Problem Classification Patterns

Many competitive programming problems map to a small set of classic patterns; recognizing keywords and constraints lets you pick the right tool fast.

#problem classification#binary search on answer#two pointers+12
⚙️AlgorithmIntermediate

Dijkstra's Algorithm

Dijkstra's algorithm finds shortest path distances from one source to all vertices when all edge weights are non-negative.

#dijkstra
Advanced
Filtering by:
#dijkstra
#shortest path
#greedy
+11
⚙️AlgorithmIntermediate

Dijkstra - Variations and Applications

Dijkstra’s algorithm can be adapted to track the second shortest path by keeping the best and second-best distances per vertex.

#dijkstra#second shortest path#k shortest paths+12
⚙️AlgorithmIntermediate

Greedy Algorithms

Greedy algorithms build a solution step by step by always taking the best local choice available.

#greedy algorithms#activity selection#interval scheduling+12