cleaned up

GDP_Gesamt/.idea/misc.xml

@@ -1,6 +1,6 @@
 <?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">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_15" default="true" project-jdk-name="15" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>

GDP_Gesamt/.idea/modules.xml

@@ -2,7 +2,7 @@
 <project version="4">
   <component name="ProjectModuleManager">
     <modules>
-      <module fileurl="file://$PROJECT_DIR$/Uebung03.iml" filepath="$PROJECT_DIR$/Uebung03.iml" />
+      <module fileurl="file://$PROJECT_DIR$/GDP_Gesamt.iml" filepath="$PROJECT_DIR$/GDP_Gesamt.iml" />
     </modules>
   </component>
 </project>

GDP_Gesamt/.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>

GDP_Gesamt/src/Livecoding/Methoden.java

@@ -0,0 +1,29 @@
+package Livecoding;
+
+public class Methoden {
+    public static void main(String[]args){
+        sop("Zinseszins: ");
+        //sop(Double.toString(zinseszins(50,2,5)),true);
+        sop(runden(zinseszins(50,2,5),2),true);
+        //sop(Double.toString(zinsesZinsmitZinsanstieg(500, 30)));
+        sop(runden(zinsesZinsmitZinsanstieg(500, 30),2),true);
+    }
+    private static void sop(String input){
+        System.out.print(input);
+    }
+    private static void sop(String input, boolean newline){
+        System.out.println(input);
+    }
+    private static double zinseszins(double startguthaben, double zinsSatz, int anlageJahre){
+        double res;
+        res = startguthaben*Math.pow(1+zinsSatz/100, anlageJahre);
+        return res;
+    }
+    private static int zinsesZinsmitZinsanstieg(int K, int p){
+        return (K*(p+1))/1;
+    }
+    public static String runden(double wert, int dezi){
+        return String.format("%." + dezi + "f",wert);
+    }
+
+}

GDP_Gesamt/src/Livecoding/Spicker.java

@@ -0,0 +1,72 @@
+package Livecoding;
+
+public class Spicker {
+    public static void main(String[] args){
+        // impliziter cast
+        int intZahl = 1;
+        double dZahl = intZahl;
+
+        // expliziter Cast
+        dZahl = 1.9;
+        intZahl = (int) dZahl;
+
+        boolean istGut = true;
+        int zahl = 0;
+        if(!istGut){
+            System.out.println("A");
+        } else if(istGut && zahl == 0){
+            System.out.print("C");
+        } else {
+            System.out.println("B");
+        }
+
+        //... weiter im Text
+
+
+        // Switch
+        int a = 1;
+        switch(a){
+            case 1:
+                System.out.print("Hallo");
+                break;
+            case 2:
+                System.out.print("Ciao");
+                break;
+            default:
+                System.out.print("Nix passiert");
+        }
+
+        // Schleifen
+        int b = 0, c = 0, d=0;
+        while(b<010) {b++; }
+        do{c++;}while(c<=10);
+
+        for(int i1= 0; i1<=10; i1++) {d++;}
+
+        // Methoden
+        methodenOhneReturn(b);
+
+        int f = methodeMitReturn(2,5);
+
+        // arrays:
+        int[] meinArray = new int[] {3,5,3,2};
+        int[] meinArray2 = new int[4];
+        // meinArray[0] = 3; //...
+        for(int i=0; i<meinArray.length;i++){
+            System.out.println(meinArray[1]);
+        }
+
+        // Variante 2: foreach -Schleife
+        for(int element:meinArray)
+            System.out.println(element);
+    }
+
+
+    // Methoden
+    public static void methodenOhneReturn(int a){
+        System.out.print(a);
+    }
+    public static int methodeMitReturn( int a, int b){
+        return a+b;
+    }
+}

GDP_Gesamt/src/Uebungen/Uebung1/HelloWorld.java

@@ -1,5 +1,7 @@
+package Uebungen.Uebung1;
+
 public class HelloWorld {
     public static void main (String[] args) {
-    System.out.println("Hello World!");
+        System.out.println("Hello World!");
     }
-   } 
+}

GDP_Gesamt/src/Uebungen/Uebung1/Sum.java

@@ -1,3 +1,5 @@
+package Uebungen.Uebung1;
+
 public class Sum {
     public static void main(String[] args){
         // Ganze Zahl, bis zu der summiert wird

GDP_Gesamt/src/Uebungen/Uebung2/Variablen.java

@@ -1,3 +1,5 @@
+package Uebungen.Uebung2;
+
 public class Variablen{
     public static void main(String[]args){
         byte bVar1 = 5;

GDP_Gesamt/src/Uebungen/Uebung2/Verdienstrechner.java

@@ -1,3 +1,5 @@
+package Uebungen.Uebung2;
+
 public class Verdienstrechner{
     public static void main(String[] args){
         float stunden = 7;

GDP_Gesamt/src/Uebungen/Uebung3/Kreis.java

@@ -1,3 +1,4 @@
+package Uebungen.Uebung3;
 import java.util.Scanner;
 
 public class Kreis {

GDP_Gesamt/src/Uebungen/Uebung3/SatellitenZeit.java

@@ -1,3 +1,4 @@
+package Uebungen.Uebung3;
 import java.util.Scanner;
 public class SatellitenZeit {
     public static void main(String[] args) {

GDP_Gesamt/src/Uebungen/Uebung3/Steuer.java

@@ -1,3 +1,4 @@
+package Uebungen.Uebung3;
 import java.util.Scanner;
 public class Steuer {
     public static void main(String[] args){

GDP_Gesamt/src/Uebungen/Uebung3/Temperatur.java

@@ -1,3 +1,4 @@
+package Uebungen.Uebung3;
 import java.util.Scanner;
 public class Temperatur {
     public static void main(String[] args){

GDP_Gesamt/src/Uebungen/Uebung4/Maximum.java

@@ -1,9 +1,11 @@
+package Uebungen.Uebung4;
 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();

GDP_Gesamt/src/Uebungen/Uebung4/Schnittmenge.java

@@ -1,4 +1,5 @@
-//import java.util.Scanner;
+package Uebungen.Uebung4;
+
 import java.util.Arrays;
 public class Schnittmenge {
     public static void main(String[] args){

GDP_Gesamt/src/Uebungen/Uebung4/Wechselgeld.java

@@ -1,3 +1,5 @@
+package Uebungen.Uebung4;
+
 import java.util.Scanner;
 public class Wechselgeld {
     public static void main(String... args){

GDP_Gesamt/src/Uebungen/Uebung5/Aufgabe1.java

@@ -0,0 +1,57 @@
+package Uebungen.Uebung5;
+import java.util.Scanner;
+public class Aufgabe1 {
+
+    public static void main(String[] args){
+        // initiate scanner for input
+        Scanner scanner = new Scanner(System.in);
+        // primes till 100 for testing
+        //int[] primes = new int[] { 2, 3,7, 13, 17, 23, 31, 37, 43, 53, 59, 67, 73, 79, 89 };
+        // select number range
+        while(true){
+            userInterface();
+            System.out.print("\n\n Check anoter range? [y/N]: ");
+            if(scanner.nextLine().charAt(0)!='y') break;
+            System.out.println();
+        }
+    }
+    public static void userInterface(){
+        Scanner scanner = new Scanner(System.in);
+        int rangeMin=0, rangeMax=0;
+        do{
+            System.out.print("\nEnter lowest number from range: ");
+            rangeMin = Integer.parseInt(scanner.nextLine());
+            if(rangeMin<2) System.out.print("[WARNING] Number must be greater than \"1\"!\n");
+        }while(rangeMin<2);
+
+        do{
+            System.out.print("\nEnter greatest number from range: ");
+            rangeMax = Integer.parseInt(scanner.nextLine());
+            if(rangeMax<rangeMin) System.out.print("[WARNING] Number must be at least equal or greater than \"" + rangeMin + "\"!\n");
+        }while(rangeMax<rangeMin);
+        int numAmount = rangeMax - rangeMin;
+        int[] numbers = new int[numAmount+1];
+        System.out.print("Adding numbers => ");
+        for(int i=0; i<=numAmount;i++){
+            numbers[i] = i+rangeMin;
+            //System.out.print("number["+i+"]="+(i+rangeMin)+" ");
+        }
+        System.out.println();
+        System.out.print("Prime numbers => ");
+        for(int number:numbers){
+            if(isPrime(number)) System.out.print(number + ", ");
+        }
+    }
+    public static boolean isPrime(int number){
+        boolean res=true; // output variable
+        // test through all divisors form 2 to number-1
+        for(int i=2;i<number;i++){
+            if(number%i==0){
+                res=false;
+                //System.out.print("("+ number%i + ")" ); // Debug
+                break;
+            }
+        }
+        return res;
+    }
+}

GDP_Gesamt/src/Uebungen/Uebung5/Aufgabe2.java

@@ -0,0 +1,69 @@
+package Uebungen.Uebung5;
+
+import java.util.Scanner;
+import java.lang.Character;
+import java.util.Arrays;
+public class Aufgabe2 {
+
+    public static void main(String[] args){
+        // initiate scanner for input
+        Scanner scanner = new Scanner(System.in);
+        while(true){
+            userInterface();
+            System.out.print("\n\n Check anoter string? [y/N]: ");
+            if(scanner.nextLine().charAt(0)!='y') break;
+            System.out.println();
+        }
+    }
+    public static void userInterface() {
+        Scanner scanner = new Scanner(System.in);
+        System.out.print("Enter desired string: ");
+        char[] stringAsCharArr = scanner.nextLine().toCharArray();
+        char[] usedCharArr = usedChars2(stringAsCharArr);
+        for(char character:usedCharArr) System.out.println(" \""+ character + "\""); // Debug
+        // System.out.println(stringAsCharArr.hashCode()); // Get the hashcode of the array
+    }
+
+    public static char[] usedChars(char[] charArray){
+        char[] workingArray = new char[charArray.length];
+        int position = 0; // current position
+        for(char currChar:charArray) {
+            currChar=Character.toLowerCase(currChar); //normalize
+            boolean exists=false;
+            for(char targetChar:workingArray) if(targetChar==currChar) exists=true;
+            if(!exists){
+                workingArray[position]=currChar;
+                position++;
+            }
+        }
+        char[] targestArray = new char[position];
+        for(int i=0;i<position;i++) targestArray[i] = workingArray[i];
+        Arrays.sort(targestArray);
+        return targestArray;
+    }
+    // Improved function: less code, less demanding
+    public static char[] usedChars2(char[] workingArray){
+        // workingArray gets an new hashcode after modifying, so its okay using it
+        // now we remove all characters that occur multiple times
+        // we also count how many chars we got
+        int counter=0;
+        for(int i=0; i<workingArray.length;i++){
+            if((int)workingArray[i]!=0) {
+                counter++; // found a new one -> increment counter
+                // now remove all similar chars from that point till the end of the array
+                for (int j = i + 1; j < workingArray.length; j++) {
+                    if (workingArray[i] == workingArray[j]) workingArray[j] = (char) 0; // set the char to 	"Null character"
+                }
+            }
+        }
+        char[] targetArray = new char[counter]; // create new
+        int targetPosition = 0; // initiate counter for the Target Array
+        for(char currChar:workingArray){ // seek through all chars
+            if((int)currChar!=0){ // if its not a null character it is a new char
+                targetArray[targetPosition] = currChar; // add the current char
+                targetPosition++; // we added a new char, so we need to increment for the next one
+            }
+        }
+        return targetArray;
+    }
+}

Uebung_1/.vscode/settings.json

@@ -1,8 +0,0 @@
-{
-    "files.exclude": {
-        "**/.classpath": true,
-        "**/.project": true,
-        "**/.settings": true,
-        "**/.factorypath": true
-    }
-}

Uebung_1/A1/SumTemplate/SumTemplate.java

@@ -1,26 +0,0 @@
-public class SumTemplate {
-    public static void main(String[] args){
-        // Ganze Zahl, bis zu der summiert wird
-        int boundary;
-        // Summe der bisher addierten ganzen Zahlen
-        int sum;
-        // Ganze Zahl
-        int counter;
-
-        // Festlegen der Startwerte
-        boundary = 4;
-        sum = 0;
-        counter = 1;
-
-        // Berechnen der Summe sum über alle Zahlen von 1 bis boundary
-        while(counter <= boundary){
-            sum = sum + counter;
-            counter = counter + 1;
-        }
-        // Ausgaben der Summe, gemeinsam mit erläuterndem Text
-        System.out.print("Die Summe der Zahlen von 1 bis ");
-        System.out.print(boundary);
-        System.out.print(" ist ");
-        System.out.print(sum);
-    } 
-}

Uebung_2/Aufgabe2/Variablen.java

@@ -1,21 +0,0 @@
-public class Variablen{
-    public static void main(String[]args){
-        byte bVar1 = 5;
-        short sVar1 = 400;
-        int iVar1 = -35676;
-        long lVar1 = 100000000L;
-        float fVar1 = 0.123f;
-        double dVar1 = 0.123;
-        boolean istPrim1 = false;
-        char cVar1 = 'x';
-        System.out.println();
-        System.out.println(bVar1);
-        System.out.println(sVar1);
-        System.out.println(iVar1);
-        System.out.println(lVar1);
-        System.out.println(fVar1);
-        System.out.println(dVar1);
-        System.out.println(cVar1);
-        System.out.println(istPrim1);
-    }
-}

Uebung_2/Aufgabe4/Verdienstrechner.java

@@ -1,35 +0,0 @@
-import java.util.Scanner;
-
-public class Verdienstrechner {
-    public static void main(String[] args) {
-        float stunden = 9f;
-        float stundenlohn = 12.0f;
-        float ueStundenlohn = 17.5f;
-        float ueStunden = 0;
-        float regArbeitszeit = 8;
-        Scanner scan = new Scanner(System.in);
-        System.out.print("Standardwerte verwenden? [J/n]: ");
-        if (scan.nextLine().equalsIgnoreCase("n")) {
-            System.out.print("\nDeine regulaere Arbeitszeit: ");
-            regArbeitszeit = scan.nextFloat();
-            System.out.print("\nWie viel verdienst du in der Stunde?: ");
-            stundenlohn = scan.nextFloat();
-            System.out.print("\n Wie viel Stunden hast du gearbeitet?: ");
-            stunden = scan.nextFloat();
-            System.out.print("\n Wie viel verdienst du bei Überstunden?:");
-            ueStundenlohn = scan.nextFloat();
-        }
-        System.out.println("------ BERECHNE-------\n");
-        System.out.println("Stundenlohn: " + stundenlohn);
-        System.out.println("Stunden insgesamt: " + stunden);
-        if (stunden > regArbeitszeit) {
-            ueStunden = stunden - regArbeitszeit;
-            System.out.println("Ueberstunden: " + ueStunden);
-            stunden = 8;
-        }
-        float verdienst = stunden * stundenlohn + ueStundenlohn * ueStunden;
-
-        System.out.println("Ich habe " + verdienst + " verdient.");
-        scan.close();
-    }
-}

Uebung_3/src/CountDown.java

@@ -1,6 +0,0 @@
-public class CountDown {
-    public static void main(String[] args){
-        System.out.println();
-
-    }
-}

Uebung_3/src/Liveuebung.java

@@ -1,35 +0,0 @@
-public class Liveuebung {
-    public static void crazyLoop(String[] args){
-        int zaehler= 0;
-        while(zaehler < 3){
-            System.out.println(zaehler++);
-
-        }
-    }
-    public static int calc(int[] numbers){
-        int sum = 0;
-        for(int i=numbers.length-1;i>=0;i--){
-            sum += numbers[i];
-        }
-        return sum*sum;
-    }
-
-    public static int calc2(int... numbers){
-        int sum=0;
-        for(int number:numbers){
-            sum += number;
-        }
-        return sum*sum;
-    }
-    public static void main(String[] args){
-        int[] input = {1,2,3};
-        int ret = calc(input);
-        System.out.println("Ergebnis: " + ret);
-        System.out.println("Anzahl " +  input.length);
-        System.out.println("-----------------");
-        System.out.println("Rechne" + calc2(1,2,3));
-
-
-    }
-
-}

Uebung_3/src/ScannerBeispiel.java

@@ -1,14 +0,0 @@
-import java.util.Scanner;
-public class ScannerBeispiel {
-    public static void main(String[] args){
-        Scanner scanner = new Scanner(System.in);
-        byte byteWert = Byte.parseByte(scanner.nextLine());
-        short shortWert = Short.parseShort(scanner.nextLine());
-        int intWert = Integer.parseInt(scanner.nextLine());
-        long longWert = Long.parseLong(scanner.nextLine());
-        float floatWert = Float.parseFloat(scanner.nextLine());
-        double doubleWert = Double.parseDouble(scanner.nextLine());
-        boolean booleanWert = Boolean.parseBoolean(scanner.nextLine());
-        scanner.close();
-    }
-}

Uebung_4/.idea/.gitignore

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

Uebung_4/.idea/misc.xml

@@ -1,6 +0,0 @@
-<?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

@@ -1,8 +0,0 @@
-<?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

@@ -1,11 +0,0 @@
-<?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>