School Commit Init

2024-08-31 12:07:21 +03:00
commit 0b130ee18c
2801 changed files with 4720552 additions and 0 deletions
@@ -0,0 +1,47 @@
+#pragma once
+#include<unordered_set>
+#include<unordered_map>
+#include<string>
+
+namespace std{
+    template<>
+    struct hash<std::pair<int,int>>{
+        size_t operator()(const std::pair<int,int>& p) const{
+            return (std::hash<int>()(p.first)<<1) ^ std::hash<int>()(p.second);
+        }
+    };
+}
+
+class DirectedGraph{
+    private:
+        std::unordered_set<int> _vertices;
+        std::unordered_map<int,std::unordered_set<int>> _inbounds;
+        std::unordered_map<int,std::unordered_set<int>> _outbounds;
+        std::unordered_map<std::pair<int,int>,int> _weights;
+    public:
+        DirectedGraph();
+        ~DirectedGraph();
+        DirectedGraph(const DirectedGraph& g);
+        DirectedGraph operator=(const DirectedGraph& g);
+        DirectedGraph reindex() const;
+
+        int numVertices() const;
+        int numEdges() const;
+        std::unordered_set<int> vertices() const;
+        std::unordered_map<std::pair<int,int>,int> edges() const;
+        bool isEdge(int v1, int v2) const;
+        int inDegree(int v) const;
+        int outDegree(int v) const;
+        std::unordered_set<int> inbounds(int v) const;
+        std::unordered_set<int> outbounds(int v) const;
+        int weight(int v1, int v2) const;
+        void weight(int v1, int v2, int w);
+        void addVertex(int v);
+        void removeVertex(int v);
+        void addEdge(int v1, int v2, int w);
+        void removeEdge(int v1, int v2);
+};
+
+DirectedGraph read_from_file(std::string filename);
+void write_to_file(const DirectedGraph& g, std::string filename);
+DirectedGraph random_graph(int num_vertices, int num_edges);