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  2. Binary tree - Wikipedia

    en.wikipedia.org/wiki/Binary_tree

    With given nodes, the minimum possible tree height is = ⁡ (+) with which the tree is a balanced full tree or perfect tree. With a given height h {\displaystyle h} , the number of nodes can't exceed the 2 h + 1 − 1 {\displaystyle 2^{h+1}-1} as the number of nodes in a perfect tree.

  3. m-ary tree - Wikipedia

    en.wikipedia.org/wiki/M-ary_tree

    A full m-ary tree is an m-ary tree where within each level every node has 0 or m children. A complete m-ary tree [3] [4] (or, less commonly, a perfect m-ary tree [5]) is a full m-ary tree in which all leaf nodes are at the same depth.

  4. Tree (abstract data type) - Wikipedia

    en.wikipedia.org/wiki/Tree_(abstract_data_type)

    The height of the root is the height of the tree. The depth of a node is the length of the path to its root (i.e., its root path). Thus the root node has depth zero, leaf nodes have height zero, and a tree with only a single node (hence both a root and leaf) has depth and height zero. Conventionally, an empty tree (tree with no nodes, if such ...

  5. Self-balancing binary search tree - Wikipedia

    en.wikipedia.org/wiki/Self-balancing_binary...

    Most operations on a binary search tree (BST) take time directly proportional to the height of the tree, so it is desirable to keep the height small. A binary tree with height h can contain at most 2 0 +2 1 +···+2 h = 2 h+1 −1 nodes. It follows that for any tree with n nodes and height h: + And that implies:

  6. Tree (set theory) - Wikipedia

    en.wikipedia.org/wiki/Tree_(set_theory)

    Infinite trees considered in automata theory (see e.g. tree (automata theory)) are also set-theoretic trees, with a tree height of up to . A graph-theoretic tree can be turned into a set-theoretic one by choosing a root node r {\displaystyle r} and defining m < n {\displaystyle m<n} if m ≠ n {\displaystyle m\neq n} and m {\displaystyle m ...

  7. Glossary of graph theory - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_graph_theory

    1. The height of a node in a rooted tree is the number of edges in a longest path, going away from the root (i.e. its nodes have strictly increasing depth), that starts at that node and ends at a leaf. 2. The height of a rooted tree is the height of its root. That is, the height of a tree is the number of edges in a longest possible path, going ...

  8. Quadtree - Wikipedia

    en.wikipedia.org/wiki/Quadtree

    In these trees, each node contains one of the input points. Since the division of the plane is decided by the order of point-insertion, the tree's height is sensitive to and dependent on insertion order. Inserting in a "bad" order can lead to a tree of height linear in the number of input points (at which point it becomes a linked-list).

  9. Level ancestor problem - Wikipedia

    en.wikipedia.org/wiki/Level_ancestor_problem

    The simplest way to find a level ancestor of a node is to climb up the tree towards the root of the tree. On the path to the root of the tree, every ancestor of a node can be visited and therefore reported. In this case, the tree does not need to be preprocessed and the time to answer a query is O(h), where "h" is the height of the tree. This ...