files added

Uebung_4/.idea/.gitignore

@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml

Uebung_4/.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_14" default="false" project-jdk-name="15" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

Uebung_4/.idea/modules.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/U4.iml" filepath="$PROJECT_DIR$/U4.iml" />
+    </modules>
+  </component>
+</project>

Uebung_4/U4.iml

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+<?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://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

Uebung_4/src/Maximum.java

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+import java.util.Scanner;
+public class Maximum {
+    public static void main(String[] args){
+        System.out.print("Bitte geben Sie die Anzahl der Zufallszahlen an: ");
+        Scanner scanner = new Scanner(System.in);
+        int arraySize = Integer.parseInt(scanner.next());
+        double[] valueStore = new double[arraySize];
+        for (int i=0; i<arraySize;i++){
+            valueStore[i] = Math.random();
+            System.out.println("#" + i + " : " + valueStore[i]);
+        }
+
+        System.out.println("Die größte Zahl hat den index: " + max(valueStore));
+    }
+    public static int max(double input[]){
+        int index=0;
+        double largestNumber = 0;
+        for(int i=0; i<input.length;i++){
+            if(largestNumber<input[i]){
+                largestNumber = input[i];
+                index = i;
+            }
+        }
+        return index;
+    }
+
+}

Uebung_4/src/Schnittmenge.java

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+//import java.util.Scanner;
+import java.util.Arrays;
+public class Schnittmenge {
+    public static void main(String[] args){
+        //Scanner scanner = new Scanner(System.in);
+        int[] set1a = {0, 1, 2, 3, 4, 5};
+        int[] set1b = {3, 4, 5, 6, 7, 8};
+        int[] set2a = {0, 1, 2, 3};
+        int[] set2b = {4, 5, 6};
+        int[] set3a = {0, 1, 2};
+        int[] set3b = {0, 1, 2};
+        System.out.println(Arrays.toString(schnittmenge(set1a, set1b)));
+        System.out.println(Arrays.toString(schnittmenge(set2a, set2b)));
+        System.out.println(Arrays.toString(schnittmenge(set3a, set3b)));
+
+    }
+
+    public static int[] schnittmenge(int[] arrA,int[] arrB){
+        int resArrSize = 0;
+        for(int numberA:arrA){
+            for(int numberB:arrB){
+                if(numberA==numberB) resArrSize++;
+            }
+        }
+        int[] resultArr = new int[resArrSize];
+        for(int numberA:arrA){
+            for(int numberB:arrB){
+                if(numberA==numberB) resultArr[--resArrSize] = numberA;
+            }
+        }
+        return resultArr;
+    }
+}

Uebung_4/src/Wechselgeld.java

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+import java.util.Scanner;
+public class Wechselgeld {
+    public static void main(String... args){
+        Scanner scanner = new Scanner(System.in);
+        System.out.print("Bitte Preis engeben: ");
+        float preis = Float.parseFloat(scanner.nextLine());
+        System.out.print("Bitte Betrag engeben: ");
+        float zahlung = Float.parseFloat(scanner.nextLine());
+        if(wechselgeld(preis,zahlung)) System.out.println("Vielen Dank!");
+        else System.out.println("Das reicht leider nicht.");
+    }
+    public static boolean wechselgeld(float sollWert, float istWert){
+        float[] scheine = {100f, 50f, 20f, 10f, 50f};
+        float[] muenzen = {2f, 1f, 0.50f, 0.20f, 0.10f, 0.05f, 0.02f, 0.01f};
+        int[] anzScheine = new int[scheine.length];
+        int[] anzMuenzen = new int[muenzen.length];
+        if(istWert<sollWert) return false;
+        else{
+            float ruekGeld = istWert - sollWert;
+            System.out.println("_______________ Scheine _____________");
+            for(int i=0; i<scheine.length; i++){
+                anzScheine[i] = (int) (ruekGeld / scheine[i]);
+                ruekGeld -= scheine[i]*(float)anzScheine[i];
+                if(anzScheine[i]>0) System.out.println(anzScheine[i] + " x " + scheine[i] + " EUR");
+            }
+            System.out.println("_______________ Muenzen _____________");
+            for(int i=0; i<muenzen.length; i++){
+                anzMuenzen[i] = (int) (ruekGeld / muenzen[i]);
+                ruekGeld -= muenzen[i]*(float)anzMuenzen[i];
+                if(anzMuenzen[i]>0) System.out.println(anzMuenzen[i] + " x " + (int)(muenzen[i]*100) + " ct");
+            }
+            return true;
+        }
+
+    }
+}