#1 Moved datastructures directly into src directory and added insert method to linked list

DataStructures/src/Nodes/linkedlistnode.h

@@ -9,6 +9,7 @@ namespace Datastructures {
 		public:
 			//Inherit Constructor and destructor from generic Undirectetd Node
 			using Generic::UndirectedNode<T, LinkedListNode<T>>::UndirectedNode;
+
 			template <typename T> 
 			friend class LinkedList;
 		private:

DataStructures/src/linkedlist.h

@@ -1,5 +1,5 @@
 #pragma once
-#include "linkedlistnode.h"
+#include "Nodes/linkedlistnode.h"
 
 namespace Datastructures {
 	template <typename T> 
@@ -9,12 +9,14 @@ namespace Datastructures {
 		LinkedList();
 		LinkedList(T value);
 		~LinkedList();
+		T operator[](int index);
 		void append(T value);
 		bool insert(T value, int index);
 		bool remove(int index);
 		int count() const;
 
 	private:
+		std::shared_ptr<Nodes::LinkedListNode<T>> getIndex(int index);
 		std::shared_ptr<Nodes::LinkedListNode<T>> mHead;
 		std::shared_ptr<Nodes::LinkedListNode<T>> mTail;
 		int mCount;
@@ -49,7 +51,32 @@ namespace Datastructures {
 		}
 
 		//Add new node and set to tail.
-		(*mTail).mNext = std::make_shared<Nodes::LinkedListNode<T>>(value);
+		mTail->mNext = std::make_shared<Nodes::LinkedListNode<T>>(value);
-		mTail = (*mTail).mNext;
+		mTail = mTail->mNext;
+	}
+
+	template <typename T>
+	bool LinkedList<T>::insert(T value, int index) {
+		std::shared_ptr<Nodes::LinkedListNode<T>> node = this->getIndex(index);
+		//If node is nullptr, index is out of range
+		if (node == nullptr)
+			return false;
+
+		//Append the new value into a new node.
+		node->mNext = std::make_shared<Nodes::LinkedListNode<T>>(value, node->mNext);
+	}
+
+	template <typename T>
+	std::shared_ptr<Nodes::LinkedListNode<T>> LinkedList<T>::getIndex(int index) {
+		//Check if the value lies within the range of the list.
+		if (index < 0 || index >= this->count())
+			return nullptr;
+
+		std::shared_ptr<Nodes::LinkedListNode<T>> node = mHead;
+		for (size_t i = 0; i < index; i++)
+		{//Interate through the linked list i times to get to the index.
+			node = node->mNext;
+		}
+		return node;
 	}
 }

src/main.cpp

@@ -1,7 +1,8 @@
-#include <LinkedList/linkedlist.h>
+#include <linkedlist.h>
 
 int main() {
 	Datastructures::LinkedList<int> list;
 	list.append(5);
 	list.append(200);
+	list.insert(20, 0);
 }