1function insert(root, value):
2 if not root: return Node(value)
3 curr = root
4 while true:
5 if value < curr.value:
6 if not curr.left: curr.left = Node(value); break
7 curr = curr.left
8 else:
9 if not curr.right: curr.right = Node(value); break
10 curr = curr.right
11 return root
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