sec balanced trees ( (bc figure splay tree single rotation this rotation takes place only when the node being splayed is child of the root herenode is promoted to the rootrotating with node because the value of is less than the value of pp must become ' right child the positions of subtrees aband are altered as appropriate to maintain the bst propertybut the contents of these subtrees remains unchanged (athe original tree with as the parent (bthe tree after rotation takes place performing single rotation second time will return the tree to its original shape equivalentlyif (bis the initial configuration of the tree ( is at the root and is its right child)then (ashows the result of single rotation to splay to the root (ap (bfigure splay tree zigzag rotation (athe original tree with spand in zigzag formation (bthe tree after the rotation takes place the positions of subtrees abcand are altered as appropriate to maintain the bst property