BSTtä

BSTtä refers to a binary search tree with an additional property. In a standard binary search tree, for any given node, all values in its left subtree are less than the node's value, and all values in its right subtree are greater than the node's value. The "tä" notation is often used in specific contexts to denote a modified or extended version of a BST, but its exact meaning can vary depending on the academic paper, textbook, or research area where it is introduced.

Without further context, "BSTtä" might imply a BST with a specific augmentation. This augmentation could relate to additional data stored at each node, a modified balancing condition, or a specialized traversal method. For example, it might represent a BST where each node also stores a count of elements in its subtree, often referred to as an order statistic tree. Alternatively, it could indicate a tree with a probabilistic property or a specific data structure used in conjunction with the BST.

The precise definition and properties of a BSTtä would be formally established within the literature that defines it. Understanding its behavior, such as insertion, deletion, and search operations, requires consulting the original source. The purpose of such a modification is typically to enhance performance for certain types of queries or to support advanced operations that are not efficiently achievable with a basic binary search tree.