1 files changed, 34 insertions, 0 deletions
diff --git a/src/main/java/com.example.portfolio3/com/example/portfolio3/Graph.java b/src/main/java/com.example.portfolio3/com/example/portfolio3/Graph.java
new file mode 100644
index 0000000..6e58029
--- /dev/null
+++ b/src/main/java/com.example.portfolio3/com/example/portfolio3/Graph.java
@@ -0,0 +1,34 @@
+package com.example.portfolio3;
+
+// origin: <https://moodle.ruc.dk/course/section.php?id=211877>
+
+import java.util.*;
+
+/// foo
+public interface Graph {
+
+  /// foo
+  /// @param v  foo
+  /// @param u  foo
+  /// @param w  foo
+  void insertEdge(String v, String u, int w);
+
+  /// foo
+  /// @return Collection
+  Collection<Vertex> vertices();
+
+  /// foo
+  /// @return Collection
+  Collection<Edge> edges();
+
+  /// foo
+  /// @param v  foo
+  /// @return Collection
+  Collection<Edge> outEdge(Vertex v);
+
+  /// foo
+  /// @param v1  foo
+  /// @param v2  foo
+  /// @return Integer
+  Integer getWeight(Vertex v1, Vertex v2);
+}