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  1. class Node:
  2.    def __init__(self, value, next=None):
  3.        self.value = value
  4.        self.next = next
  5.  
  6. # For testing
  7. def print_linked_list(head):
  8.     current = head
  9.     while current:
  10.         print(current.value, end=" -> " if current.next else "\n")
  11.         current = current.next
  12.  
  13. def edit_dna_sequence(dna_strand, m, n):
  14. 	temph = Node(0,dna_strand)
  15. 	prev = temph
  16. 	cur = dna_strand
  17. 	while (cur):
  18. 		for i in range(m):
  19. 			prev = cur
  20. 			cur = cur.next
  21. 			if not cur:
  22. 				return temph.next
  23. 		for j in range(n):
  24. 			prev.next = cur.next
  25. 			cur = cur.next
  26. 			if not cur:
  27. 				return temph.next
  28. 	return temph.next	
  29. dna_strand = Node(1, Node(2, Node(3, Node(4, Node(5, Node(6, Node(7, Node(8, Node(9, Node(10, Node(11, Node(12, Node(13)))))))))))))
  30.  
  31. print_linked_list(edit_dna_sequence(dna_strand, 2, 3))
Success #stdin #stdout 0.09s 14176KB
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https://ideone.com/Te2ZBH
language:
Python 3 (python  3.12)
created:
4 days ago
visibility:
public

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