class TreeNode:
def __init__(self, x):
self.val = x
self.left = None
self.right = None
class Solution:
# 转换思路,存储的时候一直从左向右存储,打印的时候根据不同的层一次打印
def zigzagLevelOrder(self, root):
if not root:
return []
levels, result, leftToRight = [root], [], True
while levels:
curValues, nextLevel = [], []#将左子树和右子树放在数组中,单独看
for node in levels:
curValues.append(node.val)
if node.left:
nextLevel.append(node.left)
if node.right:
nextLevel.append(node.right)
if not leftToRight:
curValues.reverse()
if curValues:
result.append(curValues)
levels = nextLevel
leftToRight = not leftToRight
return result
pNode1 = TreeNode(8)
pNode2 = TreeNode(6)
pNode3 = TreeNode(10)
pNode4 = TreeNode(5)
pNode5 = TreeNode(7)
pNode6 = TreeNode(9)
pNode7 = TreeNode(11)
pNode1.left = pNode2
pNode1.right = pNode3
pNode2.left = pNode4
pNode2.right = pNode5
pNode3.left = pNode6
pNode3.right = pNode7
S = Solution()
aList = S.zigzagLevelOrder(pNode1)
print(aList)
附件列表