def merge(l1, l2):
dummy = ListNode(-1)
p = dummy
while l1 and l2:
if l1.val < l2.val:
p.next = l1
l1 = l1.next
else:
p.next = l2
l2 = l2.next
p = p.next
if l1:
p.next = l1
l1 = l1.next
p = p.next
if l2:
p.next = l2
l2 = l2.next
p = p.next
return dummy.next
if __name__ == '__main__':
l0 = ListNode.build_from_array([1, 2, 3, 4, -5, -6])
ListNode.traverse(sortList(l0))
dummy = ListNode(-999999999999)
dummy.next = head
# 'd -> 1, 3, | 2,1,4,5'
p1 = head
p2 = head.next
while p2:
if p2.val < p1.val:
# do the insert
p = p2
p2 = p2.next
p1.next = p2
pp = dummy
while pp.next.val < p.val:
pp = pp.next
p.next = pp.next
pp.next = p
else:
p1 = p2
p2 = p2.next
return dummy.next
if __name__ == '__main__':
l0 = ListNode.build_from_array([1,2,-3])
print(ListNode.traverse(insertionSortList(l0)))
s = dummy
p = head
counter = 1
while counter < m:
s = s.next
p = p.next
counter += 1
while counter < n:
tmp = s.next
s.next = p.next
p.next = p.next.next
s.next.next = tmp
counter += 1
return dummy.next
if __name__ == '__main__':
h0 = ListNode.build_from_array([1, 2, 3, 4, 5])
ListNode.traverse(reverse_between(h0, 2, 4))
h0 = ListNode.build_from_array([1, 2, 3, 4, 5])
ListNode.traverse(reverse_between(h0, 1, 5))
h0 = ListNode.build_from_array([1])
ListNode.traverse(reverse_between(h0, 1, 1))