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[leetcode] 94. Binary Tree Inorder Traversal 본문

Coding test/programmers - single

[leetcode] 94. Binary Tree Inorder Traversal

engine 2022. 4. 4. 12:27
def inorderTraversal(self, root: TreeNode) -> List[int]:
        stack = [root]
        res = []
        while stack:
            node = stack.pop()
            if node:
                stack.append(node.right)
                stack.append(node)
                stack.append(node.left)
            else:
                if stack:
                    node = stack.pop()
                    res.append(node.val)
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