Discrete Math - 11.1.1 Introduction to Trees

A brief introduction to trees and some of the relationships that exist between the number of internal vertices, leaves, total number of vertices and number of edges.

Video Chapters:
Introduction 0:00
Trees 0:10
Rooted Trees 1:23
Terminology for Rooted Trees 3:15
Properties of Trees 6:46
Chain Letters 11:39
Up Next 16:55

Textbook: Rosen, Discrete Mathematics and Its Applications, 7e

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Hi! I like to know how to construct binary search tree when there are same input. For example, construct a binary tree for the data set: the height of a tree is a height of the root
In the data given, there are some input which is same (a, height, of, the). How do you place the same input in the tree?
Hope you can help me with this one.