a

WS23_24/Anwendungsentwicklung/src/P4/Lotto.java

@@ -0,0 +1,16 @@
+package P4;
+
+import java.util.Random;
+import java.util.TreeSet;
+
+public class Lotto {
+    public static void main(String[] args) {
+        var rand = new Random();
+        var set = new TreeSet<Integer>();
+        while(set.size()<6)
+            set.add(rand.nextInt(1,50));
+
+        for(int i:set)
+            System.out.println(i);
+    }
+}

WS23_24/Anwendungsentwicklung/src/P4/Sets.java

@@ -0,0 +1,57 @@
+package P4;
+
+import java.util.Set;
+import java.util.TreeSet;
+
+public class Sets {
+    static char[] a = {'a', 'b', 'c'};
+    static char[] b = {'b', 'c', 'd'};
+
+    public static void main(String[] args) {
+        System.out.println("A: ");
+        for (char c:a) {
+            System.out.println(c);
+        }
+        System.out.println("B: ");
+        for (char c:b) {
+            System.out.println(c);
+        }
+        System.out.println("Vereinigung: ");
+        var set = new TreeSet<Character>();
+        for (char c:a)
+            set.add(c);
+        for (char c:b)
+            set.add(c);
+        for (char c:set)
+            System.out.println(c);
+
+        System.out.println("Schnitt: ");
+        for (char ca:a)
+            for (char cb:b)
+                if(ca == cb)
+                    System.out.println(ca);
+
+
+        System.out.println("DiffT");
+        var setA = new TreeSet<Character>();
+        setA.add('a');
+        setA.add('b');
+        setA.add('c');
+
+
+        var setB = new TreeSet<Character>();
+        setB.add('b');
+        setB.add('c');
+        setB.add('d');
+
+        var newSet = new TreeSet<Character>();
+        newSet.addAll(setA);
+        newSet.removeAll(setB);
+
+        for(char c:newSet)
+            System.out.println(c);
+
+    }
+
+
+}

WS23_24/Anwendungsentwicklung/src/P4/Tabelle.java

@@ -0,0 +1,40 @@
+package P4;
+
+import java.util.*;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+public class Tabelle{
+
+    public static void main(String[] args) {
+        double[][] matrix = {
+                {1.0, 2.0, 3.0},
+                {4.0, 5.0, 6.0},
+                {4.0, 5.0, 9.0},
+                {1.0, 3.0, 12.0},
+                {4.0, 2.0, 15.0}};
+
+        var treeMap = new TreeMap<Double,Integer>();
+
+        var set = new HashSet<Double>();
+
+
+        for(double d:set)
+            treeMap.put(d,0);
+        List l = new ArrayList();
+        for(int x=0;x<matrix[0].length;x++){
+            for(int y=0 ;y < matrix.length;y++){
+                l.add(matrix[y][x]);
+            }
+            Map<Double,Integer> counted = (Map<Double, Integer>) l.stream()
+                    .collect(Collectors.groupingBy(Function.identity(), Collectors.counting()));
+
+            System.out.println(counted);
+
+        }
+
+    }
+}
+
+