93 lines
1.7 KiB
C++
93 lines
1.7 KiB
C++
#ifndef GRAPH_H_
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#define GRAPH_H_
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#include <map>
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#include <set>
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#include <iostream>
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namespace graph {
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template<typename T>
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class Graph {
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public:
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~Graph();
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// Add edge e(u,v)
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virtual void insert(const T& u, const T& v);
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// Return true if e(u,v) exists
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virtual bool contains(const T& u, const T& v);
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// Return true if vertex u exists
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virtual bool contains(const T& u);
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// Remove edge e(u,v)
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virtual void remove(const T& u, const T& v);
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// Return num. of vertices
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virtual std::uint16_t V();
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// Return num. of edges
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virtual std::uint16_t E();
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// Output graph
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virtual void output();
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// Adjacency matrix representation
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std::map<T, std::set<T>> adjMatrix;
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};
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template<typename T>
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Graph<T>::~Graph() {
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adjMatrix.clear();
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}
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template<typename T>
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inline void Graph<T>::insert(const T& u, const T& v) {
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Graph<T>::adjMatrix[u].insert(v);
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}
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template<typename T>
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bool Graph<T>::contains(const T& u, const T& v) {
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return adjMatrix[u].contains(v);
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}
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template<typename T>
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bool Graph<T>::contains(const T& u) {
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return adjMatrix.contains(u);
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}
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template<typename T>
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void Graph<T>::remove(const T& u, const T& v) {
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adjMatrix[u].erase(v);
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}
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template<typename T>
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std::uint16_t Graph<T>::V() {
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return static_cast<std::uint16_t>(adjMatrix.size());
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}
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template<typename T>
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std::uint16_t Graph<T>::E() {
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std::uint16_t edges = 0;
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for (const auto& v : adjMatrix) {
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edges += static_cast<std::uint16_t>(v.second.size());
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}
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return static_cast<std::uint16_t>(edges);
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}
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template<typename T>
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void Graph<T>::output() {
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for (const auto& v : adjMatrix) {
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for (const auto& u : v.second) {
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std::cout << v.first << "->" << u << '|';
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}
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std::cout << '\n';
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}
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std::cout << '\n';
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}
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} // namespace graph
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#endif |