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September 15, 2015 04:00
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Inorder traversal from end
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| def inorderFromEnd(bst): | |
| stack = [bst] | |
| while bst.right is not None: | |
| bst = bst.right | |
| stack.append(bst) | |
| while stack: | |
| top = stack.pop() | |
| if top.left is not None: | |
| bst = top.left | |
| stack.append(bst) | |
| while bst.right is not None: | |
| bst = bst.right | |
| stack.append(bst) | |
| yield top |
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