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list/linked_list.cc

+#include "linked_list.h"
+
+//Insert node at head
+//skap tom lista
+
+    List::List(): 
+    head{nullptr}, tail{nullptr} 
+    {}
+
+   
+   
+    List::~List() {
+    
+    if(List_Is_Empty() == false ){
+
+    Node* my_node = head;
+
+    while (my_node != tail){
+        my_node = my_node->next;
+        delete my_node->previous;
+    }
+    delete my_node;
+    head = nullptr;
+    tail = nullptr;
+    list_size = 0; 
+
+}
+}
+
+
+    bool List::List_Is_Empty(){
+        if (head == nullptr)
+        {
+            return true;
+        }
+        else
+        {
+            return false;
+        }
+    }
+
+
+    //List::Node::Node(int new_value):
+   // value{new_value}
+    //{}
+    
+    
+
+
+
+
+//omskriven insert funktion SOM INTE ÄR TESTAD 
+
+
+ /*   void List::Insert_Head_Node(int value){
+
+    if(List_Is_Empty() == true ){
+ 
+    Node* my_node = new Node(value);
+    my_node->previous = nullptr;
+    my_node->next = nullptr;
+    head = my_node;
+    tail = my_node;
+    }
+    else
+    { 
+    Node* my_node = new Node(value);
+    my_node->previous = tail;
+    my_node->next = nullptr;
+    tail->next = my_node;
+    tail = my_node;
+
+
+    }
+    }
+
+*/
+
+
+
+
+
+
+    void List::Insert_Head_Node(int value){
+    Node* my_node = new Node(value);
+    my_node->previous = nullptr;
+    my_node->next = nullptr;
+    head = my_node;
+    tail = my_node;
+    }
+
+    //insert node at tail 
+
+void List::Insert_Tail_Node(int value){
+Node* my_node = new Node(value);
+my_node->previous = tail;
+my_node->next = nullptr;
+tail->next = my_node;
+tail = my_node;
+}
+
+
+void List::printlist(Node* head){
+Node* traverser = head;
+while(traverser != nullptr) {
+    cout<<traverser->value<<endl;
+    traverser = traverser->next; 
+}
+}
+
+
+int main()
+
+{
+
+List newlist;
+
+newlist.Insert_Head_Node(5);
+newlist.Insert_Tail_Node(3);
+newlist.Insert_Tail_Node(1);
+
+newlist.printlist(newlist.head);
+
+return 0;
+}
+
+
+/*
+
+    List::Node* Head;
+    List::Node* Tail;
+  
+   
+    List::Node* node = new List::Node();
+    node->Value = 1;
+    node->previous = nullptr;
+    node->next = nullptr;
+    Head = node;
+    Tail = node;
+
+*/
+
+
+
+
+
+
+/*void printlist(List::Node*Head){
+List::Node* Traverser = Head;
+while(Traverser != nullptr) {
+    cout<<Traverser->Value<<endl;
+    Traverser = Traverser->next; 
+}
+
+
+
+int main()
+{
+    Link* Head;
+    Link* Tail;
+
+    
+//Insert node at head
+    Link* link = new Link();
+    link->Value = 1;
+    link->previous = nullptr;
+    link->next = nullptr;
+    Head = link;
+    Tail = link;
+insert node at tail 
+    link = new Link();
+    link->Value = 1;
+    link->previous = Tail;
+    link->next = nullptr;
+    Tail->next = link;
+    Tail = link;
+// node 3 (same as node 2)
+    link = new Link();
+    link->Value = 1;
+    link->previous = Tail;
+    link->next = nullptr;
+    Tail->next = link;
+    Tail = link;
+
+printlist(Head);
+
+}*/
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