diff --git a/Algoritmi_2/Laboratorio/Lab8/Hiking/.gitignore b/Algoritmi_2/Laboratorio/Lab8/Hiking/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..f68d1099657e34d4e7a68aadc730b3ecad84667d
--- /dev/null
+++ b/Algoritmi_2/Laboratorio/Lab8/Hiking/.gitignore
@@ -0,0 +1,29 @@
+### IntelliJ IDEA ###
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store
\ No newline at end of file
diff --git a/Algoritmi_2/Laboratorio/Lab8/Hiking/.idea/.gitignore b/Algoritmi_2/Laboratorio/Lab8/Hiking/.idea/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..26d33521af10bcc7fd8cea344038eaaeb78d0ef5
--- /dev/null
+++ b/Algoritmi_2/Laboratorio/Lab8/Hiking/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/Algoritmi_2/Laboratorio/Lab8/Hiking/.idea/misc.xml b/Algoritmi_2/Laboratorio/Lab8/Hiking/.idea/misc.xml
new file mode 100644
index 0000000000000000000000000000000000000000..69ace3f6affaf674f40a55887f3d6f3564afd626
--- /dev/null
+++ b/Algoritmi_2/Laboratorio/Lab8/Hiking/.idea/misc.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+ <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="openjdk-21" project-jdk-type="JavaSDK">
+ <output url="file://$PROJECT_DIR$/out" />
+ </component>
+</project>
\ No newline at end of file
diff --git a/Algoritmi_2/Laboratorio/Lab8/Hiking/.idea/modules.xml b/Algoritmi_2/Laboratorio/Lab8/Hiking/.idea/modules.xml
new file mode 100644
index 0000000000000000000000000000000000000000..2fb8e2e915873580d8c1156ae8c1fcd1bd9e12ff
--- /dev/null
+++ b/Algoritmi_2/Laboratorio/Lab8/Hiking/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+ <component name="ProjectModuleManager">
+ <modules>
+ <module fileurl="file://$PROJECT_DIR$/Hiking.iml" filepath="$PROJECT_DIR$/Hiking.iml" />
+ </modules>
+ </component>
+</project>
\ No newline at end of file
diff --git a/Algoritmi_2/Laboratorio/Lab8/Hiking/.idea/vcs.xml b/Algoritmi_2/Laboratorio/Lab8/Hiking/.idea/vcs.xml
new file mode 100644
index 0000000000000000000000000000000000000000..4fce1d86b49521afe1cee4ed1c13b6396ebbc6f3
--- /dev/null
+++ b/Algoritmi_2/Laboratorio/Lab8/Hiking/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+ <component name="VcsDirectoryMappings">
+ <mapping directory="$PROJECT_DIR$/../../../.." vcs="Git" />
+ </component>
+</project>
\ No newline at end of file
diff --git a/Algoritmi_2/Laboratorio/Lab8/Hiking/Hiking.iml b/Algoritmi_2/Laboratorio/Lab8/Hiking/Hiking.iml
new file mode 100644
index 0000000000000000000000000000000000000000..9aa92e91148f2596fbd6a72b38da2b1073d984c6
--- /dev/null
+++ b/Algoritmi_2/Laboratorio/Lab8/Hiking/Hiking.iml
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+ <component name="NewModuleRootManager" inherit-compiler-output="true">
+ <exclude-output />
+ <content url="file://$MODULE_DIR$">
+ <sourceFolder url="file://$MODULE_DIR$/Test" isTestSource="true" />
+ <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+ </content>
+ <orderEntry type="inheritedJdk" />
+ <orderEntry type="sourceFolder" forTests="false" />
+ <orderEntry type="module-library">
+ <library>
+ <CLASSES>
+ <root url="jar://$MODULE_DIR$/../../graphLib.jar!/" />
+ </CLASSES>
+ <JAVADOC>
+ <root url="jar://$MODULE_DIR$/../../graphLib.jar!/doc" />
+ </JAVADOC>
+ <SOURCES />
+ </library>
+ </orderEntry>
+ <orderEntry type="module-library" scope="TEST">
+ <library name="JUnit5.8.1">
+ <CLASSES>
+ <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter/5.8.1/junit-jupiter-5.8.1.jar!/" />
+ <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-api/5.8.1/junit-jupiter-api-5.8.1.jar!/" />
+ <root url="jar://$MAVEN_REPOSITORY$/org/opentest4j/opentest4j/1.2.0/opentest4j-1.2.0.jar!/" />
+ <root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-commons/1.8.1/junit-platform-commons-1.8.1.jar!/" />
+ <root url="jar://$MAVEN_REPOSITORY$/org/apiguardian/apiguardian-api/1.1.2/apiguardian-api-1.1.2.jar!/" />
+ <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-params/5.8.1/junit-jupiter-params-5.8.1.jar!/" />
+ <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-engine/5.8.1/junit-jupiter-engine-5.8.1.jar!/" />
+ <root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-engine/1.8.1/junit-platform-engine-1.8.1.jar!/" />
+ </CLASSES>
+ <JAVADOC />
+ <SOURCES />
+ </library>
+ </orderEntry>
+ </component>
+</module>
\ No newline at end of file
diff --git a/Algoritmi_2/Laboratorio/Lab8/Hiking/Test/HikingTest.java b/Algoritmi_2/Laboratorio/Lab8/Hiking/Test/HikingTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..9f0436c021d16a168c0eb772ea7fdacb9a77d207
--- /dev/null
+++ b/Algoritmi_2/Laboratorio/Lab8/Hiking/Test/HikingTest.java
@@ -0,0 +1,43 @@
+import it.uniupo.graphLib.UndirectedGraph;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.util.Arrays;
+
+public class HikingTest {
+
+ @Test
+ void testMinDistanza() {
+ UndirectedGraph graph = new UndirectedGraph("5; 0 1 13; 0 2 16; 0 4 9; 3 0 19; 3 1 14; 3 2 12; 3 4 26; 1 4 22; 1 2 7; 4 2 15");
+
+ boolean[][] map = new boolean[graph.getOrder()][graph.getOrder()];
+ for (int i = 0; i < map.length; ++i) {
+ Arrays.fill(map[i], true);
+ }
+ // System.out.println(graph);
+ Hikes hikesTest = new Hikes(graph, map);
+ Assertions.assertEquals(12, hikesTest.minDistanza(3));
+ Assertions.assertEquals(13, hikesTest.minDistanza(2));
+
+ Assertions.assertTrue(hikesTest.minDistanza(2) > hikesTest.minDistanza(graph.getOrder()));
+ }
+
+ @Test
+ void testMinDistanzaNonPercorribili() {
+ UndirectedGraph graph = new UndirectedGraph("5; 0 1 13; 0 2 16; 0 4 9; 3 0 19; 3 1 14; 3 2 12; 3 4 26; 1 4 22; 1 2 7; 4 2 15");
+
+ boolean[][] map = new boolean[graph.getOrder()][graph.getOrder()];
+ for (int i = 0; i < map.length; ++i) {
+ Arrays.fill(map[i], true);
+ }
+ map[0][1] = false;
+ map[3][2] = false;
+
+
+ Hikes hikesTest = new Hikes(graph, map);
+ Assertions.assertEquals(14, hikesTest.minDistanza(3));
+ Assertions.assertEquals(15, hikesTest.minDistanza(2));
+
+ Assertions.assertTrue(hikesTest.minDistanza(2) > hikesTest.minDistanza(graph.getOrder()));
+ }
+}
diff --git a/Algoritmi_2/Laboratorio/Lab8/Hiking/src/Hikes.java b/Algoritmi_2/Laboratorio/Lab8/Hiking/src/Hikes.java
new file mode 100644
index 0000000000000000000000000000000000000000..a320ba16ac72ceb294adaf7f05b08057090dc34c
--- /dev/null
+++ b/Algoritmi_2/Laboratorio/Lab8/Hiking/src/Hikes.java
@@ -0,0 +1,68 @@
+import it.uniupo.algoTools.MinHeap;
+import it.uniupo.algoTools.UnionByRank;
+import it.uniupo.algoTools.UnionFind;
+import it.uniupo.graphLib.*;
+
+public class Hikes {
+
+ UndirectedGraph myGraph;
+
+ public Hikes(UndirectedGraph rifugi, boolean[][] percorribile) {
+ for (int i = 0; i < percorribile.length; ++i) {
+ for (int j = 0; j < percorribile[i].length; ++j) {
+ if (!percorribile[i][j] && rifugi.hasEdge(i, j)) {
+ rifugi.removeEdge(i, j);
+ }
+ }
+ }
+ myGraph = rifugi;
+ }
+
+ private int kruskalClustering(int maxCluster) {
+ UnionFind unionByRank = new UnionByRank(myGraph.getOrder());
+ MinHeap<Edge, Integer> minHeap = new MinHeap<>();
+
+ //UndirectedGraph copyGraph = myGraph;
+
+ for (int i = 0; i < myGraph.getOrder(); ++i) {
+ for (Edge e : myGraph.getOutEdges(i)) {
+ minHeap.add(e, e.getWeight());
+ // copyGraph.removeEdge(e.getTail(), e.getHead());
+ }
+ }
+
+ while (!minHeap.isEmpty() && unionByRank.getNumberOfSets() > maxCluster) {
+ Edge edge = minHeap.extractMin();
+ int leaderTail = unionByRank.find(edge.getTail());
+ int leaderHead = unionByRank.find(edge.getHead());
+ if (leaderHead != leaderTail) {
+ unionByRank.union(leaderHead, leaderTail);
+ }
+ }
+
+ //Calcolo lo spaziamento
+ while (!minHeap.isEmpty()) {
+ Edge edge = minHeap.extractMin();
+ int leaderTail = unionByRank.find(edge.getTail());
+ int leaderHead = unionByRank.find(edge.getHead());
+ if (leaderHead != leaderTail) {
+ return edge.getWeight();
+ }
+ }
+
+ //Se numGite è 0 o 1
+ return -1;
+ }
+
+ public int minDistanza(int numGite) {
+ if (numGite < 0) {
+ throw new IllegalArgumentException("Il numero delle gite deve essere > 0");
+ }
+ return kruskalClustering(numGite);
+
+ }
+
+ public void printGraph() {
+ System.out.println(myGraph);
+ }
+}
diff --git a/Algoritmi_2/Laboratorio/Lab8/Hiking/src/Main.java b/Algoritmi_2/Laboratorio/Lab8/Hiking/src/Main.java
new file mode 100644
index 0000000000000000000000000000000000000000..3e59c38fbd57497a72e78859efacc67ac75869da
--- /dev/null
+++ b/Algoritmi_2/Laboratorio/Lab8/Hiking/src/Main.java
@@ -0,0 +1,5 @@
+public class Main {
+ public static void main(String[] args) {
+ System.out.println("Hello world!");
+ }
+}
\ No newline at end of file