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authorJonas Smedegaard <dr@jones.dk>2025-04-29 07:19:10 +0200
committerJonas Smedegaard <dr@jones.dk>2025-04-29 07:19:10 +0200
commit705b7a5a32793f7ed8a24b8b35afe3f9d49348be (patch)
tree7cffeb0de03a4638b87f04e01e7193eacbeaeede /src/com.example.portfolio3/com/example/portfolio3/AdjListGraph.java
parenta5c3599d7bc7a9ef5583ad2d50a55975f030fbea (diff)
tidy whitespace
Diffstat (limited to 'src/com.example.portfolio3/com/example/portfolio3/AdjListGraph.java')
-rw-r--r--src/com.example.portfolio3/com/example/portfolio3/AdjListGraph.java82
1 files changed, 44 insertions, 38 deletions
diff --git a/src/com.example.portfolio3/com/example/portfolio3/AdjListGraph.java b/src/com.example.portfolio3/com/example/portfolio3/AdjListGraph.java
index 765eeca..88e54d6 100644
--- a/src/com.example.portfolio3/com/example/portfolio3/AdjListGraph.java
+++ b/src/com.example.portfolio3/com/example/portfolio3/AdjListGraph.java
@@ -8,44 +8,50 @@ import java.util.HashSet;
import java.util.Map;
import java.util.Set;
-/// Adjecency List Graph - A map from vertices to set of outedges from the vertex
+/// Adjecency List Graph - A map from vertices to set of outedges from the vertex
public class AdjListGraph extends AbstractGraph {
- /// foo
- public AdjListGraph() {}
-
- /// foo
- private Map<Vertex,Set<Edge>> outEdge= new HashMap<>();
-
- /// foo
- public void insertEdge(final Vertex v1, final Vertex v2, final int w){
- Edge e=new Edge(v1,v2,w);
- if(!outEdge.containsKey(e.from()))
- outEdge.put(e.from(),new HashSet<Edge>());
- outEdge.get(e.from()).add(e);
- }
-
- /// foo
- public Collection<Edge> edges(){
- Set<Edge> edges=new HashSet<>();
- for(Vertex v:outEdge.keySet())edges.addAll(outEdge.get(v));
- return edges;
- }
-
- /// foo
- public Collection<Edge> outEdge(final Vertex v){
- if(!outEdge.containsKey(v))
- return new HashSet<Edge>();
- return outEdge.get(v);
- }
-
- /// foo
- public Integer getWeight(final Vertex v1, final Vertex v2){
- // linear in number of outedges from vertices
- if(!outEdge.containsKey(v1))return null;
- for(Edge e:outEdge.get(v1)){
- if(e.to()==v2)return e.weight();
- }
- return null;
- }
+ /// foo
+ public AdjListGraph() { }
+
+ /// foo
+ private Map<Vertex,Set<Edge>> outEdge = new HashMap<>();
+
+ /// foo
+ public void insertEdge(final Vertex v1, final Vertex v2, final int w) {
+ Edge e = new Edge(v1, v2, w);
+ if (!outEdge.containsKey(e.from()))
+ outEdge.put(e.from(), new HashSet<Edge>());
+ outEdge.get(e.from()).add(e);
+ }
+
+ /// foo
+ public Collection<Edge> edges() {
+ Set<Edge> edges = new HashSet<>();
+ for (Vertex v: outEdge.keySet())edges.addAll(outEdge.get(v));
+
+ return edges;
+ }
+
+ /// foo
+ public Collection<Edge> outEdge(final Vertex v) {
+ if (!outEdge.containsKey(v))
+ return new HashSet<Edge>();
+
+ return outEdge.get(v);
+ }
+
+ /// foo
+ public Integer getWeight(final Vertex v1, final Vertex v2) {
+
+ // linear in number of outedges from vertices
+ if (!outEdge.containsKey(v1))
+ return null;
+ for (Edge e: outEdge.get(v1)) {
+ if (e.to() == v2)
+ return e.weight();
+ }
+
+ return null;
+ }
}