Python学习——leetcode(Binary Tree Level Order Traversal)
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<pre name="code" class="python">class Solution: # @param root, a tree node # @return a list of lists of integers def levelOrder(self, root):queue=[]l=[]if root:queue.append(root)while len(queue)>0:length=len(queue)tempList=[]while length>0:tempNone=queue.pop()length-=1tempList.append(tempNone.val)if tempNone.left!=None:queue.insert(0,tempNone.left)if tempNone.right!=None:queue.insert(0,tempNone.right)l.append(tempList)return lelse:return l
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