Graph implementation

Author: ZapDos7

README.md

@@ -126,7 +126,7 @@
 - [x] [Sort HashMap by value](https://www.digitalocean.com/community/tutorials/java-programming-interview-questions#24-write-a-java-program-that-sorts-hashmap-by-value)
 
 ### Graphs
-
+- [x] Given a list of edges and tasked to build your own graph from the edges
 ### Matrix
 
 ### Trees
@@ -267,7 +267,6 @@
 
 
 - Graphs
-    - [ ] Given a list of edges and tasked to build your own graph from the edges
     - [ ] Implement Dijkstra’s algorithm
     - [ ] Implement Topological sort
     - [ ] Implement Bellman-Ford algorithm

src/dataStructures/graphs/CustomGraph.java

@@ -0,0 +1,70 @@
+package dataStructures.graphs;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+
+public class CustomGraph {
+
+    public static void main(String[] args) {
+          CustomGraph customGraph = new CustomGraph();
+          Map<Vertex, List<Vertex>> map = new HashMap<>();
+          map.put(new Vertex("name"), List.of());
+          map.put(new Vertex("name2"), List.of(new Vertex("name")));
+          customGraph.setAdjVertices(map);
+          System.out.println(customGraph);
+    }
+
+    //
+    private Map<Vertex, List<Vertex>> adjVertices;
+
+    public CustomGraph() {
+    }
+
+    public CustomGraph(Map<Vertex, List<Vertex>> adjVertices) {
+        this.adjVertices = adjVertices;
+    }
+
+    public Map<Vertex, List<Vertex>> getAdjVertices() {
+        return adjVertices;
+    }
+
+    public void setAdjVertices(Map<Vertex, List<Vertex>> adjVertices) {
+        this.adjVertices = adjVertices;
+    }
+
+    @Override
+    public String toString() {
+        return "Graph {" +
+                "vertices=" + adjVertices +
+                '}';
+    }
+
+    public static class Vertex {
+        String label;
+        Vertex(String label) {
+            this.label = label;
+        }
+
+        @Override
+        public boolean equals(Object o) {
+            if (o == null || getClass() != o.getClass())
+                return false;
+            Vertex vertex = (Vertex) o;
+            return Objects.equals(label, vertex.label);
+        }
+
+        @Override
+        public int hashCode() {
+            return Objects.hashCode(label);
+        }
+
+        @Override
+        public String toString() {
+            return "Vertex {" +
+                    "label='" + label + '\'' +
+                    '}';
+        }
+    }
+}