Solution for Generics 04

.devcontainer.json

@@ -0,0 +1,3 @@
+{
+    "image": "mcr.microsoft.com/devcontainers/java:21"
+}

.vscode/extensions.json

@@ -0,0 +1,5 @@
+{
+    "recommendations": [
+        "vscjava.vscode-java-pack"
+    ]
+}

Club.java

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+public record Club(String name, int marketValueInMillions) {}

Exercise.java

@@ -1,6 +1,14 @@
+import java.util.ArrayList;
+
 public class Exercise {
 
   public static void main(String[] args) {
-    // implement exercise here
+    Tournament tournament = new Tournament("Football Cup", new ArrayList<>(), new ArrayList<>());
+
+    tournament.addClub(new Club("SC Freiburg", 165));
+    tournament.addClub(new Club("Bayern Muenchen", 926));
+    tournament.addClub(new Club("Borussia Dortmund", 462));
+
+    tournament.pairs().forEach(System.out::println);
   }
 }

Pair.java

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+public record Pair<T>(T partA, T partB) {}

Tournament.java

@@ -0,0 +1,20 @@
+import java.util.List;
+
+public record Tournament(String title, List<Club> clubs, List<Pair<Club>> pairs) {
+
+  public void addClub(Club club) {
+    clubs.add(club);
+  }
+
+  public List<Pair<Club>> pairs() {
+    for (int i = 0; i < clubs.size(); i++) {
+      for (int j = 0; j < clubs.size(); j++) {
+        if (i != j) {
+          pairs.add(new Pair<Club>(clubs.get(i), clubs.get(j)));
+        }
+      }
+    }
+
+    return pairs;
+  }
+}