The method reverses the order of nodes in a doubly linked list by: 1. Iterating from the start node to the end, swapping the next and prev pointers of each node 2. Swapping the start and end nodes after the iteration 3. This reverses the direction of traversal through the list from front to back

1. public void Reverse()
{
Node t = Start , temp;
while (t != null)
{
temp = t.next;
t.next = t.prev;
t.prev = temp;
t = t.prev;
}
temp = Start;
Start = End;
End = temp;
}
O STADYAR .O RG

2. O STADYAR .O RG
Node t = Start , temp;
start
next next next next
1 2 3 4
prev prev prev prev
end
t temp

3. O STADYAR .O RG
temp = t.next;
start
next next next next
1 2 3 4
prev prev prev prev
end
t temp

4. O STADYAR .O RG
t.next = t.prev;
start
next next next next
1 2 3 4
prev prev prev prev
end
t temp

5. O STADYAR .O RG
t.prev = temp;
start
next next next next
1 2 3 4
prev prev prev prev
end
t temp

6. O STADYAR .O RG
t = t.prev;
start
next next next next
1 2 3 4
prev prev prev prev
end
t temp

7. O STADYAR .O RG
while (t != null)
{
temp = t.next;
t.next = t.prev;
t.prev = temp;
t = t.prev;
}

8. O STADYAR .O RG
temp = t.next;
start
next next next next
1 2 3 4
prev prev prev prev
end
t temp

9. O STADYAR .O RG
t.next = t.prev;
start
next next next next
1 2 3 4
prev prev prev prev
end
t temp

10. O STADYAR .O RG
t.prev = temp;
start
next next next next
1 2 3 4
prev prev prev prev
end
t temp

11. O STADYAR .O RG
t = t.prev;
start
next next next next
1 2 3 4
prev prev prev prev
end
t temp

12. O STADYAR .O RG
while (t != null)
{
temp = t.next;
t.next = t.prev;
t.prev = temp;
t = t.prev;
}

13. O STADYAR .O RG
temp = t.next;
start
next next next next
1 2 3 4
prev prev prev prev
end
t temp

14. O STADYAR .O RG
t.prev = temp;
start
next next next next
1 2 3 4
prev prev prev prev
end
t temp

15. O STADYAR .O RG
t = t.prev;
start
next next next next
1 2 3 4
prev prev prev prev
end
t temp

16. O STADYAR .O RG
while (t != null)
{
temp = t.next;
t.next = t.prev;
t.prev = temp;
t = t.prev;
}

17. O STADYAR .O RG
temp = t.next;
start
next next next next
1 2 3 4
prev prev prev prev
end
t temp

18. O STADYAR .O RG
t.next = t.prev;
start
next next next next
1 2 3 4
prev prev prev prev
end
t temp

19. O STADYAR .O RG
t.prev = temp;
start
next next next next
1 2 3 4
prev prev prev prev
end
t temp

20. O STADYAR .O RG
t = t.prev;
start
next next next next
1 2 3 4
prev prev prev prev
end
t temp

21. O STADYAR .O RG
while (t != null) False
{
temp = t.next;
t.next = t.prev;
t.prev = temp;
t = t.prev;
}
temp = Start;
Start = End;
End = temp;

22. O STADYAR .O RG
temp = Start;
start
next next next next
1 2 3 4
prev prev prev prev
end
t temp

23. O STADYAR .O RG
Start = End;
start
next next next next
1 2 3 4
prev prev prev prev
end
t temp

24. O STADYAR .O RG
End = temp;
start
next next next next
1 2 3 4
prev prev prev prev
end
t temp