From c4b04378de3b3f260ab1ead4df7193cff3252826 Mon Sep 17 00:00:00 2001
From: Kshitiz Sharma <110187324+kshitiz11101@users.noreply.github.com>
Date: Wed, 29 May 2024 22:15:52 +0530
Subject: [PATCH] Create EventualSafeStates.cpp

---
 Graphs/EventualSafeStates.cpp | 47 +++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 Graphs/EventualSafeStates.cpp

diff --git a/Graphs/EventualSafeStates.cpp b/Graphs/EventualSafeStates.cpp
new file mode 100644
index 0000000..ee72e71
--- /dev/null
+++ b/Graphs/EventualSafeStates.cpp
@@ -0,0 +1,47 @@
+class Solution {
+    private:
+     bool dfs(int node, vector<int>&vis,vector<vector<int>>& graph, vector<int>&pathVis, vector<int>&check){
+        vis[node]=1;
+        pathVis[node]=1;
+        check[node]=0;
+        for(auto it:graph[node]){
+            if(!vis[it]){
+                if(dfs(it,vis,graph,pathVis,check)==true){
+                    check[node]=0;
+                    return true;
+                }
+            }
+            else if(pathVis[it]){
+                check[node]=0;
+                return true;
+            }
+        }
+        check[node]=1;
+        pathVis[node]=0;
+        return false;
+        
+    }
+public:
+    vector<int> eventualSafeNodes(vector<vector<int>>& graph) {
+        int V=graph.size();
+
+        vector<int>vis(V,0);
+        vector<int>pathVis(V,0);
+        vector<int>check(V,0);
+        vector<int>safe;
+        
+        for(int i=0;i<V;i++){
+            if(!vis[i]){
+                dfs(i,vis,graph,pathVis,check);
+                    
+                }
+            }
+        
+        for(int i=0;i<V;i++){
+            if(check[i]==1){
+                safe.push_back(i);
+            }
+        }
+        return safe;
+    }
+};