K-ary tree

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In graph theory, a k-ary tree is a rooted tree in which each node has no more than k children. It is also sometimes known as a k-way tree, an N-ary tree, or an M-ary tree.

A binary tree is the special case where k=2.

A full k-ary tree is a k-ary tree where each node has either 0 or k children.

For a k-ary tree with height h, the upper bound for the maximum number of leaves is $k^h$ .

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