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Author: SAMIR PAUL

Practice/Singly Linked List ALL-IN-ONE.py

@@ -0,0 +1,155 @@
+class Node:
+    def __init__(self,data):
+        self.data = data
+        self.next = None
+        
+class Linkedlist:
+    def __init__(self):
+        self.head = None
+ 
+# To print the total LinkedList
+
+    def print_LL(self):
+        if self.head is None:
+            print("The Linkedlist is Empty")
+        else:
+            tem = self.head
+            while tem is not None:
+                print(tem.data)
+                tem = tem.next
+
+# Add at the beginning
+
+    def add_begin(self,data):
+        if self.head is None:
+            new_node = Node(data)
+            self.head = new_node
+        else:
+            new_node = Node(data)
+            new_node.next = self.head
+            self.head = new_node
+
+# Add after the End Node
+
+    def add_end(self,data):
+        if self.head is None:
+            self.head = Node(data)
+        else:
+            tem = self.head
+            while tem.next is not None:
+                tem = tem.next
+            new_node = Node(data)
+            tem.next = new_node
+            
+# Add after a given Node
+
+    def after_node(self,x,data):
+        if self.head is None:
+            print("Can Not add as LL is Empty")
+        else:
+            tem = self.head
+            while tem.next is not None:
+                if tem.data == x:
+                    break
+                tem = tem.next
+            if tem.next is None:
+                print(f"Enter data {x} is out of bound!")
+            else:
+                new_node = Node(data)
+                new_node.next = tem.next
+                tem.next = new_node  
+
+# Add before a given node
+
+    def before_node(self,x,data):
+        if self.head is None:
+            print("Can Not add as LL is Empty") 
+        else:
+            tem = self.head
+            while tem.next is not None:
+                if tem.next.data == x:
+                    break
+                tem = tem.next
+            if tem.next is None:
+                print(f"Enter data {x} is out of bound!!!")
+            else:
+                new_node = Node(data)
+                new_node.next = tem.next
+                tem.next = new_node
+
+# Delete by Value of a Nodde
+
+    def delete_by_value(self,x):
+        if self.head is None:
+            print("Can Not add as LL is Empty") 
+        elif self.head.data ==x:
+            self.head = self.head.next
+        else:
+            tem = self.head
+            while tem.next is not None:
+                if tem.next.data ==x:
+                    break
+                tem = tem.next
+            if tem.next is None:
+                print(f"Entered value {x} is Not found!!!!") 
+            else:
+                tem.next = tem.next.next
+
+# Delete First Node
+
+    def delete_begining(self):
+        if self.head is None:
+            print("The LL is Empty so can not be deleted!!!!")
+        else:
+            self.head = self.head.next
+
+# Delete the end node
+
+    def delete_end(self):
+        if self.head is None:
+            print("The LL is Empty so can not be deleted!!!!")
+        else:
+            tem = self.head
+            while tem.next.next is not None:
+                tem = tem.next
+            tem.next = None
+
+# Delete next node of a given node
+
+    def delete_next_node(self,x):
+        if self.head is None:
+            print("The LL is Empty so can not be deleted!!!!")
+        else:
+            tem = self.head
+            while tem.next is not None:
+                if tem.data ==x:
+                    break
+                tem = tem.next
+            if tem.next is None:
+                print(f"The given value {x} is out of bound!!!!!!!!!!!!!!!!!!!!!!!")
+            else:
+                tem.next = tem.next.next
+
+
+    
+            
+LL = Linkedlist()
+
+LL.add_begin(40)
+LL.add_begin(30)
+LL.add_begin(20)
+LL.add_begin(10)
+LL.add_end(50)
+LL.add_end(60)
+LL.add_end(70)
+LL.after_node(400,100)
+LL.before_node(310,5000)
+LL.delete_by_value(10)
+LL.delete_begining()
+LL.delete_end()
+LL.delete_next_node(330)
+
+LL.print_LL()
+
+
+