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Create DoubleLinkedList.cpp #2

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35 changes: 35 additions & 0 deletions LinkedList/DoubleLinkedList.cpp
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Original file line number Diff line number Diff line change
@@ -0,0 +1,35 @@
#include <iostream>
using namespace std;
struct Node {
int data;
struct Node *prev;
struct Node *next;
};
struct Node* head = NULL;
void insert(int newdata) {
struct Node* newnode = (struct Node*) malloc(sizeof(struct Node));
newnode->data = newdata;
newnode->prev = NULL;
newnode->next = head;
if(head != NULL)
head->prev = newnode ;
head = newnode;
}
void display() {
struct Node* ptr;
ptr = head;
while(ptr != NULL) {
cout<< ptr->data <<" ";
ptr = ptr->next;
}
}
int main() {
insert(3);
insert(1);
insert(7);
insert(2);
insert(9);
cout<<"The doubly linked list is: ";
display();
return 0;
}