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MatrixGraph.cpp
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MatrixGraph.cpp
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#include "MatrixGraph.h"
MatrixGraph::MatrixGraph(int vertices_count) : vertices_count(vertices_count),
matrix(vertices_count * vertices_count, false) {
}
MatrixGraph::MatrixGraph(const IGraph &graph) : vertices_count(graph.VerticesCount()),
matrix(vertices_count * vertices_count, false) {
for (int i = 0; i < graph.VerticesCount(); ++i) {
for (auto j: graph.GetNextVertices(i)) {
matrix[i * vertices_count + j] = true;
}
}
}
MatrixGraph::~MatrixGraph() {
}
void MatrixGraph::AddEdge(int from, int to) {
matrix[from * vertices_count + to] = true;
}
int MatrixGraph::VerticesCount() const {
return vertices_count;
}
std::vector<int> MatrixGraph::GetNextVertices(int vertex) const {
std::vector<int> result;
for (int j = 0; j < vertices_count; ++j) {
if (matrix[vertex * vertices_count + j]) {
result.push_back(j);
}
}
return result;
}
std::vector<int> MatrixGraph::GetPrevVertices(int vertex) const {
std::vector<int> result;
for (int i = 0; i < vertices_count; ++i) {
if (matrix[i * vertices_count + vertex]) {
result.push_back(i);
}
}
return result;
}