What is a Binary Tree?
An introduction to binary trees, and different types of binary trees.
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Introduction #
A binary tree is a tree in which each node has between 0-2 children. They’re called the left and right children of the node. The figure below shows what a Binary Tree looks like.
Types of Binary Trees
Complete Binary Trees
A complete binary tree is a binary tree in which all the levels of the tree are fully filled, except for perhaps the last level which can be filled from left to right. The total number of nodes in a complete binary tree can be expressed as:
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