aufgeräumt & Sieb

java2.iml

@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
-  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8">
-    <output url="file://$MODULE_DIR$/target/classes" />
-    <output-test url="file://$MODULE_DIR$/target/test-classes" />
-    <content url="file://$MODULE_DIR$">
-      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
-      <excludeFolder url="file://$MODULE_DIR$/target" />
-    </content>
-    <orderEntry type="inheritedJdk" />
-    <orderEntry type="sourceFolder" forTests="false" />
-    <orderEntry type="library" scope="TEST" name="Maven: org.junit.jupiter:junit-jupiter-api:5.0.1" level="project" />
-    <orderEntry type="library" scope="TEST" name="Maven: org.opentest4j:opentest4j:1.0.0" level="project" />
-    <orderEntry type="library" scope="TEST" name="Maven: org.junit.platform:junit-platform-commons:1.0.1" level="project" />
-    <orderEntry type="library" scope="TEST" name="Maven: junit:junit:4.12" level="project" />
-    <orderEntry type="library" scope="TEST" name="Maven: org.hamcrest:hamcrest-core:1.3" level="project" />
-  </component>
-</module>

pom.xml

@@ -55,11 +55,11 @@
             <scope>test</scope>
         </dependency>
         <dependency>
-            <groupId>org.junit.jupiter</groupId>
+        <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit-jupiter-engine</artifactId>
+        <artifactId>junit-jupiter-engine</artifactId>
-            <version>5.1.0</version>
+        <version>5.1.0</version>
-            <scope>test</scope>
+        <scope>test</scope>
-        </dependency>
+    </dependency>
         <dependency>
             <groupId>org.junit.vintage</groupId>
             <artifactId>junit-vintage-engine</artifactId>

src/main/java/de/joethei/hs/java2/praktikum/praktikum1/GrosseZahl.java

@@ -1,4 +1,4 @@
-package de.joethei.hs.java2.praktikum1;
+package de.joethei.hs.java2.praktikum.praktikum1;
 
 public class GrosseZahl {
 

src/main/java/de/joethei/hs/java2/vorlesungen/Sieb.java

@@ -0,0 +1,38 @@
+package de.joethei.hs.java2.vorlesungen;
+
+import java.util.Set;
+import java.util.TreeSet;
+
+public class Sieb {
+    private int n;
+
+    public Sieb(int n) {
+        this.n = n;
+    }
+
+    public Set<Integer> getPrimzahl() {
+        Set<Integer> set = new TreeSet<>();
+        for(int i = 2; i <= n; i++) {
+            set.add(i);
+        }
+        Set<Integer> not = new TreeSet<>();
+        int mult;
+        int number = 2;
+        do{
+         mult = 2*number;
+            while (mult <= n) {
+                not.add(mult);
+                mult += number;
+            }
+            do {
+                number++;
+            }
+            while (not.contains(number));
+        }while (number * number <= n);
+        set.removeAll(not);
+
+        return set;
+    }
+
+
+}

src/test/java/de/joethei/hs/java2/tests/GrosseZahlTest.java

@@ -1,11 +1,12 @@
 package de.joethei.hs.java2.tests;
 
-import de.joethei.hs.java2.praktikum1.GrosseZahl;
+import de.joethei.hs.java2.praktikum.praktikum1.GrosseZahl;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 
 import static org.junit.jupiter.api.Assertions.*;
 
+@DisplayName("Eigene GrosseZahl")
 class GrosseZahlTest {
 
     @Test

src/test/java/de/joethei/hs/java2/tests/GrosseZahlTest2.java

@@ -1,11 +1,12 @@
 package de.joethei.hs.java2.tests;
 
-import static org.junit.Assert.*;
+import de.joethei.hs.java2.praktikum.praktikum1.GrosseZahl;
-
-import de.joethei.hs.java2.praktikum1.GrosseZahl;
 import org.junit.Before;
 import org.junit.Test;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
 public class GrosseZahlTest2 {
 
     GrosseZahl i0;

src/test/java/de/joethei/hs/java2/tests/VorlesungsTest.java

@@ -0,0 +1,19 @@
+package de.joethei.hs.java2.tests;
+
+import de.joethei.hs.java2.vorlesungen.Sieb;
+import org.junit.jupiter.api.Test;
+
+import java.util.Arrays;
+import java.util.Set;
+import java.util.TreeSet;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class VorlesungsTest {
+
+    @Test
+    void sieb() {
+        Set<Integer> set = new TreeSet<>(Arrays.asList(2, 3, 5, 7, 11, 13, 17, 19));
+        assertEquals(set, new Sieb(20).getPrimzahl());
+    }
+}