# binary search tree

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Among other things, a binary search tree can be used for sorting data elements. This project is to randomly generate a sequence of integer numbers, insert the first 20 distinct numbers into a binary search tree, and finally produce an in-order listing of the tree. You are provided with the declarations and two functions for binary search trees (see the appended). One of the functions is Insert that adds a new element to a binary search tree. And the other is a lookup which checks if a given element is already in a binary search tree. In this project, you need to define a print function that prints tree elements in in-order as well as a count function that counts and returns the number of tree nodes in a binary search tree. In addition you need to complete the main function. You may use the built-in random number function to generate new elements for inserting as shown below:

srand(time(NULL)); //do it at the beginning of main function

newElem = rand() % 100;

//generate a new element one at a time

Then you can check for each new element if it is already there using the lookup function and if there are enough elements in the tree using the count function before doing insert. Finally, use the print function to show the result.

see attached file

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A binary search tree

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