Merged Graphs

data_structures/Graph/Breadth_First_Search.py

@@ -0,0 +1,70 @@
+class GRAPH:
+    """docstring for GRAPH"""
+    def __init__(self, nodes):
+        self.nodes=nodes
+        self.graph=[[0]*nodes for i in range (nodes)]
+        self.visited=[0]*nodes
+
+
+    def show(self):
+
+        for i in self.graph:
+            for j in i:
+                print(j, end=' ')
+            print(' ')
+    def bfs(self,v):
+
+        visited = [False]*self.vertex
+        visited[v - 1] = True
+        print('%d visited' % (v))
+
+        queue = [v - 1]
+        while len(queue) > 0:
+            v = queue[0]
+            for u in range(self.vertex):
+                if self.graph[v][u] == 1:
+                    if visited[u]== False:
+                        visited[u] = True
+                        queue.append(u)
+                        print('%d visited' % (u +1))
+            queue.pop(0)
+
+g = Graph(10)
+
+g.add_edge(1,2)
+g.add_edge(1,3)
+g.add_edge(1,4)
+g.add_edge(2,5)
+g.add_edge(3,6)
+g.add_edge(3,7)
+g.add_edge(4,8)
+g.add_edge(5,9)
+g.add_edge(6,10)
+g.bfs(4)
+=======
+        print self.graph
+
+    def add_edge(self, i, j):
+        self.graph[i][j]=1
+        self.graph[j][i]=1
+
+    def bfs(self,s):
+        queue=[s]
+        self.visited[s]=1
+        while len(queue)!=0:
+            x=queue.pop(0)
+            print(x)
+            for i in range(0,self.nodes):
+                if self.graph[x][i]==1 and self.visited[i]==0:
+                    queue.append(i)     
+                    self.visited[i]=1
+
+n=int(input("Enter the number of Nodes : "))
+g=GRAPH(n)
+e=int(input("Enter the no of edges : "))
+print("Enter the edges (u v)")
+for i in range(0,e):
+    u,v=map(int, raw_input().split())
+    g.add_edge(u,v)
+s=int(input("Enter the source node :"))
+g.bfs(s)

data_structures/Graph/Deep_First_Search.py

@@ -0,0 +1,32 @@
+class GRAPH:
+    """docstring for GRAPH"""
+    def __init__(self, nodes):
+        self.nodes=nodes
+        self.graph=[[0]*nodes for i in range (nodes)]
+        self.visited=[0]*nodes
+
+
+    def show(self):
+        print self.graph
+
+    def add_edge(self, i, j):
+        self.graph[i][j]=1
+        self.graph[j][i]=1
+
+    def dfs(self,s):
+        self.visited[s]=1
+        print(s)
+        for i in range(0,self.nodes):
+            if self.visited[i]==0 and self.graph[s][i]==1:
+                self.dfs(i)
+            
+
+n=int(input("Enter the number of Nodes : "))
+g=GRAPH(n)
+e=int(input("Enter the no of edges : "))
+print("Enter the edges (u v)")
+for i in range(0,e):
+    u,v=map(int, raw_input().split())
+    g.add_edge(u,v)
+s=int(input("Enter the source node :"))
+g.dfs(s)

data_structures/Graph/Graph_list.py

@@ -0,0 +1,28 @@
+class Graph:
+    def __init__(self, vertex):
+        self.vertex = vertex
+        self.graph = [[0] for i in range(vertex)]
+
+    def add_edge(self, u, v):
+        self.graph[u - 1].append(v - 1)
+
+    def show(self):
+        for i in range(self.vertex):
+            print('%d: '% (i + 1), end=' ')
+            for j in self.graph[i]:
+                print('%d-> '% (j + 1), end=' ')
+            print(' ')
+
+
+
+g = Graph(100)
+
+g.add_edge(1,3)
+g.add_edge(2,3)
+g.add_edge(3,4)
+g.add_edge(3,5)
+g.add_edge(4,5)
+
+
+g.show()
+

data_structures/Graph/Graph_matrix.py

@@ -0,0 +1,29 @@
+class Graph:
+
+    def __init__(self, vertex):
+        self.vertex = vertex
+        self.graph = [[0] * vertex for i in range(vertex) ]
+
+    def add_edge(self, u, v):
+        self.graph[u - 1][v - 1] = 1
+        self.graph[v - 1][u - 1] = 1
+
+    def show(self):
+
+        for i in self.graph:
+            for j in i:
+                print(j, end=' ')
+            print(' ')
+
+
+
+
+g = Graph(100)
+
+g.add_edge(1,4)
+g.add_edge(4,2)
+g.add_edge(4,5)
+g.add_edge(2,5)
+g.add_edge(5,3)
+g.show()
+