chore(CPlusPlus): add remove-duplicates-in-sorted-linked-list (#453)

algorithms/CPlusPlus/Linked-Lists/remove-duplicates-in-sorted-linked-list.cpp

@@ -0,0 +1,68 @@
+//Program to Remove Duplicates in Sorted Singly linkedlist 
+
+
+//                                                            Algorithm: 
+
+//Traverse the list from the head (or start) node. 
+//While traversing, compare each node with its next node. 
+//If the data of the next node is the same as the current node then delete the next node. 
+//Before we delete a node, we need to store the next pointer of the node 
+
+
+//Implementation: 
+#include <bits/stdc++.h> 
+using namespace std; 
+
+/* a node of the singly linked list */
+struct Node{
+    int data;
+    Node* next;
+    Node(int x){
+        data=x;
+        next=NULL;
+    }
+};
+
+/* Function to print nodes in a given linked list */
+void printlist(Node *head){
+    Node *curr=head;
+    while(curr!=NULL){
+        cout<<curr->data<<" ";
+        curr=curr->next;
+    }cout<<endl;
+}
+
+//Function to Remove Duplicates from linked list
+void removeduplicates(Node *head){
+    Node *curr=head;
+    //check for duplicates if found then remove it
+    while(curr!=NULL && curr->next!=NULL){
+        if(curr->data==curr->next->data){
+            Node *temp=curr->next;
+            curr->next=curr->next->next;
+            delete temp;
+        }
+        else{
+            curr=curr->next;
+        }
+    }
+}
+
+int main() 
+{ 
+	Node *head=new Node(10);
+	head->next=new Node(11);
+	head->next->next=new Node(11);
+	head->next->next->next=new Node(13);
+	head->next->next->next->next=new Node(13);
+	head->next->next->next->next->next=new Node(15);
+	printlist(head);
+    removeduplicates(head);
+	printlist(head);
+	return 0;
+}
+/*
+Input: 10 11 11 13 13 15
+Output: 10 11 13 15
+Time Complexity: O(n) where n is the number of nodes in the given linked list.
+*/

algorithms/CPlusPlus/README.md

@@ -46,6 +46,7 @@
 9. [Detecting cycle in a singly linked list](Linked-Lists/Cycle-Detection.cpp)
 10. [Find Merge Point of two singly linked list](Linked-Lists/Find-Merge-Point.cpp)
 11. [Segregate Even Odd Nodes of linked list](Linked-Lists/segregate-even-odd-nodes-of-linked-list.cpp)
+12. [Remove Duplicate in Sorted linked list](Linked-Lists/remove-duplicates-in-sorted-linked-list.cpp)
 
 ## Searching