LinkedList low level implementation [i]

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Problem statement: LinkedList low level implementation in java !
  1. class A1 {
  2. A1 n;
  3. int data;
  4. }

  6. public class LinkedListLowLevelExe1 {
  7. A head;

  9. public static void main(String[] args) {

  11. A1 head = new A1();
  12. head.data = 1;
  13. head.n = null;

  15. A1 h1 = new A1();
  16. h1.data = 2;
  17. h1.n = null;

  19. head.n = h1;

  21. A1 h2 = new A1();
  22. h2.data = 3;
  23. h2.n = null;

  25. h1.n = h2;

  27. A1 h3 = new A1();
  28. h3.data = 4;
  29. h3.n = null;

  31. h2.n = h3;

  33. A1 h4 = new A1();
  34. h4.data = 5;
  35. h4.n = null;

  37. h3.n = h4;
  38. System.out.println(head.data); // h.data;
  39. System.out.println(head.n.data); // h=h.n; h.data;
  40. System.out.println(head.n.n.data); // h=h.n.n;h.data;
  41. System.out.println(head.n.n.n.data); // h=h.n.n.n;h.data;
  42. System.out.println(head.n.n.n.n.data); // h=h.n.n.n.n;h.data;
  43. }
  44. }
Output:
1
2
3
4
5

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