Mavzu: Chiziqli ikki bog’lamli ro’yxatlar va ularni dasturda amalga oshirish

return;
}
// display linked list contents
void displayList(struct Node *node)
{
//traverse the list to display each node
while (node != NULL)
{
cout<data<<"-->";
node = node->next;
}
if(node== NULL)
cout<<"null";
}
/* main program for linked list*/
int main()
{
/* empty list */
struct Node* head = NULL;
// Insert 10.
append(&head, 10);
// Insert 20 at the beginning.
push(&head, 20);
// Insert 30 at the beginning.
push(&head, 30);
// Insert 40 at the end.
append(&head, 40); //
Insert 50, after 20.
insertAfter(head->next, 50);
cout<<"Final linked list: "<displayList(head);
return 0;
}

Chiqish:
Yakuniy bog'langan ro'yxat:
30–>20–>50–>10–>40–>null
Keyinchalik, Java-da bog'langan ro'yxatni kiritish operatsiyasini amalga oshiramiz. Java tilida bog'langan ro'yxat sinf sifatida amalga oshiriladi. Quyidagi dastur mantiqan C++ dasturiga o'xshaydi, yagona farq shundaki, biz bog'langan ro'yxat uchun sinfdan foydalanamiz.

package lesson1; import java.util.Scanner; public class main2 { static class LinkedList { Node head; // head of list //linked list node declaration class Node { int data; Node next; Node(int d) {data = d; next = null; } } /* Insert a new node at the front of the list */ public void push(int new_data) { //allocate and assign data to the node Node newNode = new Node(new_data); //new node becomes head of linked list newNode.next = head; //head points to new node head = newNode; } // Given a node,prev_node insert node after prev_node public void insertAfter(Node prev_node, int new_data) { //check if prev_node is null. if (prev_node == null) { System.out.println("The given node is required and cannot be null"); return; } //allocate node and assign data to it Node newNode = new Node(new_data); //next of new Node is next of prev_node newNode.next = prev_node.next; //prev_node->next is the new node. prev_node.next = newNode; } //inserts a new node at the end of the list public void append(int new_data) { //allocate the node and assign data Node newNode = new Node(new_data); //if linked list is empty, then new node will be the head if (head == null) { head = new Node(new_data); return; } //set next of new node to null as this is the last node newNode.next = null; // if not the head node traverse the list and add it to the last Node last = head; while (last.next != null) last = last.next; //next of last becomes new node last.next = newNode; return; } //display contents of linked list public void displayList() { Node pnode = head; while (pnode != null) { System.out.print(pnode.data+"-->"); pnode = pnode.next; } if(pnode == null) System.out.print("null"); } } //Main class to call linked list class functions and construct a linked list static class Main{ public static void main(String[] args) { /* create an empty list */ LinkedList lList = new LinkedList(); // Insert 40. lList.append(40); // Insert 20 at the beginning. lList.push(20); // Insert 10 at the beginning. lList.push(10); // Insert 50 at the end. lList.append(50); // Insert 30, after 20. lList.insertAfter(lList.head.next, 30); System.out.println("\nFinal linked list: "); lList. displayList (); } } }