Merge branch 'development'

Everything without tests works
Windows and Linux compatible

Author: baatochan

CMakeLists.txt

@@ -3,4 +3,9 @@ project(GraphRepresentationsAndAlgorithmsComparison)
 
 set(CMAKE_CXX_STANDARD 11)
 
-add_executable(GraphRepresentationsAndAlgorithmsComparison main.cpp)
+if (CMAKE_BUILD_TYPE MATCHES RELEASE)
+	set(CMAKE_EXE_LINKER_FLAGS "-static-libgcc -static-libstdc++")
+endif (CMAKE_BUILD_TYPE MATCHES RELEASE)
+
+set(SOURCE_FILES main.cpp Program.cpp Graph.cpp DirectedGraph.cpp UndirectedGraph.cpp MinHeapElement.cpp)
+add_executable(GraphRepresentationsAndAlgorithmsComparison ${SOURCE_FILES})

DirectedGraph.cpp

@@ -0,0 +1,309 @@
+//
+// Created by barto on 19.05.18.
+//
+
+#include <cmath>
+#include <random>
+#include <climits>
+#include "DirectedGraph.h"
+
+using namespace std;
+
+// public
+
+DirectedGraph::DirectedGraph() : Graph("Graf skierowany", 1) {}
+
+std::string DirectedGraph::getAvailableAlgorithms() {
+	std::string output = "";
+
+	output += "6. Algorytm Dijkstry (SP) [arg1 <- rodzaj reprezentacji (m - macierz, l - lista); arg2 <- wierzch. pocz.; arg3 <- wierzch. konc.]\n";
+
+	return output;
+}
+
+void DirectedGraph::generate(int numberOfVertices, int density, int range) {
+	double dens = (double)density / 100;
+	dens *= numberOfVertices * (numberOfVertices - 1);
+	int numberOfEdges = round(dens);
+
+	// prepare matrix and list
+	incidenceMatrix.clear();
+	adjacencyList.clear();
+
+	incidenceMatrix.resize(numberOfEdges);
+	adjacencyList.resize(numberOfVertices);
+
+	for (auto& row : incidenceMatrix) {
+		row.assign(numberOfVertices, 0);
+	}
+
+	// declare rands
+	std::random_device rd;
+	std::mt19937 mt(rd());
+	std::uniform_int_distribution<int> randomVertex(0, numberOfVertices - 1);
+	// std::uniform_int_distribution<int> randomEdge(0, numberOfEdges - 1);
+	// std::uniform_int_distribution<int> randomValue(1, 15);
+	std::uniform_int_distribution<int> randomValue(1, range);
+
+	int beginningVertex = 0;
+	int endVertex = 0;
+	int value;
+	bool edgeBeginningNotAvailable = true;
+	bool edgeEndNotAvailable = true;
+
+	// generate rand edges
+	for (int i = 0; i < numberOfEdges; i++) {
+		// random beggining
+		edgeBeginningNotAvailable = true;
+		while (edgeBeginningNotAvailable){
+			beginningVertex = randomVertex(mt);
+			edgeBeginningNotAvailable = !edgeBeginningAvailable(beginningVertex);
+		};
+		// random end
+		edgeEndNotAvailable = true;
+		while (edgeEndNotAvailable){
+			endVertex = randomVertex(mt);
+			edgeEndNotAvailable = !edgeEndAvailable(beginningVertex, endVertex);
+		};
+
+		value = randomValue(mt);
+
+		adjacencyList[beginningVertex].push_front({endVertex, value});
+		incidenceMatrix[i][beginningVertex] = value;
+		incidenceMatrix[i][endVertex] = -1 * value;
+	}
+
+}
+
+string DirectedGraph::runAlgorithm(char index, char arg1, int arg2, int arg3) {
+	string output;
+
+	if (index == 1) {
+		if (arg1 == 0) {
+			output = dijkstrasAlgorithmOnMatrix(arg2, arg3, true);
+		} else if (arg1 == 1) {
+			output = dijkstrasAlgorithmOnList(arg2, arg3, true);
+		} else {
+			throw "Nieznany blad!"; // should never be thrown
+		}
+	} else {
+		throw "Algorytm nie istnieje!";
+	}
+
+	return output;
+}
+
+void DirectedGraph::test() {
+
+}
+
+// protected
+
+void DirectedGraph::loadRawDataToMatrix(std::vector<int> rawData) {
+	incidenceMatrix.clear();
+	int i = 0;
+	incidenceMatrix.resize(rawData[i++]); // clear vector and resize to first item of raw data
+
+	for (auto& row : incidenceMatrix) {
+		row.assign(rawData[i], 0);
+	}
+	i++;
+
+	for (int j = 0; j < incidenceMatrix.size(); j++) {
+		int edgeBeginning = rawData[i++];
+		int edgeEnd = rawData[i++];
+		int edgeValue = rawData[i++];
+
+		if (edgeBeginning == edgeEnd) {
+			incidenceMatrix.clear();
+			throw "Petle sa nieakceptowane!";
+		}
+
+		incidenceMatrix[j][edgeEnd] = edgeValue * -1;
+		incidenceMatrix[j][edgeBeginning] = edgeValue;
+	}
+}
+
+void DirectedGraph::loadRawDataToList(std::vector<int> rawData) {
+	adjacencyList.clear();
+	int i = 0;
+
+	int numberOfEdges = rawData[i++];
+
+	adjacencyList.resize(rawData[i++]);
+
+	for (int j = 0; j < numberOfEdges; j++) {
+		int edgeBeginning = rawData[i++];
+		int edgeEnd = rawData[i++];
+		int edgeValue = rawData[i++];
+
+		if (edgeBeginning == edgeEnd) {
+			incidenceMatrix.clear();
+			throw "Petle sa nieakceptowane!";
+		}
+
+		adjacencyList[edgeBeginning].push_front({edgeEnd, edgeValue});
+	}
+}
+
+// private
+
+std::string DirectedGraph::dijkstrasAlgorithmOnMatrix(int beginVertex, int endVertex, bool print) {
+	if (incidenceMatrix.size() == 0)
+		throw "Graf pusty!";
+
+	int numberOfVertices = incidenceMatrix[0].size();
+
+
+	if (beginVertex >= numberOfVertices || endVertex >= numberOfVertices)
+		throw "Poczatkowy lub koncowy wierzcholek nie istnieje!";
+
+	// create needed arrays and assign default values
+	vector<bool> visitedVertices;
+	vector<unsigned long> pathLength;
+	vector<int> previousVertex;
+	visitedVertices.assign(numberOfVertices, false);
+	pathLength.assign(numberOfVertices, ULONG_MAX);
+	previousVertex.assign(numberOfVertices, -1);
+
+	// assaing starting value
+	pathLength[beginVertex] = 0;
+	int currentVertex = beginVertex;
+	unsigned long shortestPath;
+	int shortestPathVertex;
+
+	// run main loop for numberOfVertices times (every vertex will be visisted)
+	for (int i = 0; i < numberOfVertices; i++) {
+		unsigned long currentLength = pathLength[currentVertex];
+
+		for (auto& row : incidenceMatrix) {
+			if (row[currentVertex] > 0) {
+				for (int j = 0; j < numberOfVertices; j++) {
+					if (row[j] < 0) {
+						if (pathLength[j] > currentLength + row[currentVertex]) {
+							pathLength[j] = currentLength + row[currentVertex];
+							previousVertex[j] = currentVertex;
+						}
+					}
+				}
+			}
+		}
+
+		visitedVertices[currentVertex] = true;
+
+		shortestPath = ULONG_MAX;
+		shortestPathVertex = -1;
+
+		for (int j = 0; j < numberOfVertices; j++) {
+			if (!visitedVertices[j]) {
+				if (pathLength[j] < shortestPath) {
+					shortestPath = pathLength[j];
+					shortestPathVertex = j;
+				}
+			}
+		}
+
+		if ((i != numberOfVertices - 1) && (shortestPathVertex == -1))
+			throw "Graf niespojny!";
+
+		currentVertex = shortestPathVertex;
+
+	}
+
+	if (print) {
+		string output;
+		output = "Najkrotsza droga z wierzch.: " + to_string(beginVertex) + " do wierzch.: " + to_string(endVertex) +
+		         " wynosi: " + to_string(pathLength[endVertex]) + ".\n";
+		output += "Prowadzi nastepujaca droga: ";
+
+		currentVertex = endVertex;
+
+		output += to_string(currentVertex);
+
+		while (currentVertex != beginVertex) {
+			currentVertex = previousVertex[currentVertex];
+			output += " <- " + to_string(currentVertex);
+		}
+
+		return output;
+	}
+
+	return "";
+}
+
+std::string DirectedGraph::dijkstrasAlgorithmOnList(int beginVertex, int endVertex, bool print) {
+	if (adjacencyList.size() == 0)
+		throw "Graf pusty!";
+
+	int numberOfVertices = adjacencyList.size();
+
+
+	if (beginVertex >= numberOfVertices || endVertex >= numberOfVertices)
+		throw "Poczatkowy lub koncowy wierzcholek nie istnieje!";
+
+	// create needed arrays and assign default values
+	vector<bool> visitedVertices;
+	vector<unsigned long> pathLength;
+	vector<int> previousVertex;
+	visitedVertices.assign(numberOfVertices, false);
+	pathLength.assign(numberOfVertices, ULONG_MAX);
+	previousVertex.assign(numberOfVertices, -1);
+
+	// assaing starting value
+	pathLength[beginVertex] = 0;
+	int currentVertex = beginVertex;
+	unsigned long shortestPath;
+	int shortestPathVertex;
+
+	// run main loop for numberOfVertices times (every vertex will be visisted)
+	for (int i = 0; i < numberOfVertices; i++) {
+		unsigned long currentLength = pathLength[currentVertex];
+
+		for (auto& edge : adjacencyList[currentVertex]) {
+			if (pathLength[edge.edgeEnd] > currentLength + edge.value){
+				pathLength[edge.edgeEnd] = currentLength + edge.value;
+				previousVertex[edge.edgeEnd] = currentVertex;
+			}
+		}
+
+		visitedVertices[currentVertex] = true;
+
+		shortestPath = ULONG_MAX;
+		shortestPathVertex = -1;
+
+		for (int j = 0; j < numberOfVertices; j++) {
+			if (!visitedVertices[j]) {
+				if (pathLength[j] < shortestPath) {
+					shortestPath = pathLength[j];
+					shortestPathVertex = j;
+				}
+			}
+		}
+
+		if ((i != numberOfVertices - 1) && (shortestPathVertex == -1))
+			throw "Graf niespojny!";
+
+		currentVertex = shortestPathVertex;
+
+	}
+
+	if (print) {
+		string output;
+		output = "Najkrotsza droga z wierzch.: " + to_string(beginVertex) + " do wierzch.: " + to_string(endVertex) +
+		         " wynosi: " + to_string(pathLength[endVertex]) + ".\n";
+		output += "Prowadzi nastepujaca droga: ";
+
+		currentVertex = endVertex;
+
+		output += to_string(currentVertex);
+
+		while (currentVertex != beginVertex) {
+			currentVertex = previousVertex[currentVertex];
+			output += " <- " + to_string(currentVertex);
+		}
+
+		return output;
+	}
+
+	return "";
+}

DirectedGraph.h

@@ -0,0 +1,34 @@
+//
+// Created by barto on 19.05.18.
+//
+
+#ifndef GRAPHREPRESENTATIONSANDALGORITHMSCOMPARISON_DIRECTEDGRAPH_H
+#define GRAPHREPRESENTATIONSANDALGORITHMSCOMPARISON_DIRECTEDGRAPH_H
+
+
+#include "Graph.h"
+
+class DirectedGraph : public Graph {
+public:
+	DirectedGraph();
+
+	std::string getAvailableAlgorithms() override;
+
+	void generate(int numberOfVertices, int density, int range) override;
+
+	std::string runAlgorithm(char index, char arg1, int arg2, int arg3) override;
+
+	void test() override;
+
+protected:
+	void loadRawDataToMatrix(std::vector<int> rawData) override ;
+	void loadRawDataToList(std::vector<int> rawData) override ;
+
+private:
+	std::string dijkstrasAlgorithmOnMatrix(int beginVertex, int endVertex, bool print);
+	std::string dijkstrasAlgorithmOnList(int beginVertex, int endVertex, bool print);
+
+};
+
+
+#endif //GRAPHREPRESENTATIONSANDALGORITHMSCOMPARISON_DIRECTEDGRAPH_H