From ba8eae3b1e9ff21ae32e97fa3b5f54b8983432c1 Mon Sep 17 00:00:00 2001
From: beginner1010 <vahid.sanei@gmail.com>
Date: Tue, 5 Jun 2018 13:55:05 -0500
Subject: [PATCH] Graph is updated. Null pointer exception is fixed
---
src/main/java/Algorithm/Graph.java | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/src/main/java/Algorithm/Graph.java b/src/main/java/Algorithm/Graph.java
index 2a803e8..bbd6b9d 100644
--- a/src/main/java/Algorithm/Graph.java
+++ b/src/main/java/Algorithm/Graph.java
@@ -45,7 +45,7 @@ public class Graph {
}
public int addVertex (String vertex) {
- if (vertexIndex.containsKey(vertex) == false) {
+ if (!vertexIndex.containsKey(vertex)) {
this.vertices.add(numberOfVertices) ;
this.vertexIndex.put(vertex, numberOfVertices++) ;
this.AdjList.add(new HashSet<>()) ;
@@ -54,7 +54,10 @@ public class Graph {
}
public Graph(String args) {
- AdjList = new ArrayList<>();
+ this.AdjList = new ArrayList<>();
+ this.vertexIndex = new HashMap<>() ;
+ this.numberOfVertices = 0 ;
+ this.vertices = new ArrayList<>() ;
trianglecount = new HashMap<>();
try {
BufferedReader br = new BufferedReader(new FileReader(args));
--
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