"""
# Definition for a Node.
class Node:
def __init__(self, val: int = 0, left: 'Node' = None, right: 'Node' = None, next: 'Node' = None):
self.val = val
self.left = left
self.right = right
self.next = next
"""
class Solution:
def connect(self, root: 'Node') -> 'Node':
q = [root, None]
count = 0
while len(q) != 0:
k = q.pop(0)
if k== None:
q.append(None)
count+=1
if count >1:
break
continue
k.next = q[0]
count = 0
if k.left:
q.append(k.left)
if k.right:
q.append(k.right)
return root
544B - Sea and Islands | 152B - Steps |
1174D - Ehab and the Expected XOR Problem | 1511A - Review Site |
1316A - Grade Allocation | 838A - Binary Blocks |
1515D - Phoenix and Socks | 1624D - Palindromes Coloring |
1552F - Telepanting | 1692G - 2Sort |
1191A - Tokitsukaze and Enhancement | 903A - Hungry Student Problem |
52B - Right Triangles | 1712A - Wonderful Permutation |
1712D - Empty Graph | 1712B - Woeful Permutation |
1712C - Sort Zero | 1028B - Unnatural Conditions |
735B - Urbanization | 746C - Tram |
1278B - A and B | 1353D - Constructing the Array |
1269C - Long Beautiful Integer | 1076A - Minimizing the String |
913C - Party Lemonade | 1313A - Fast Food Restaurant |
681A - A Good Contest | 1585F - Non-equal Neighbours |
747A - Display Size | 285A - Slightly Decreasing Permutations |