Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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Answer using scheme language R5RS

Bmary Trees Recall the following code from the lecture slides: (define (make-tree value left right) (list value left right)) (define (value T) (car T)) (define (right T) (caddr T)) (define (left T) (cadr T)) 1. Write a SCHEME function, named (tree-size T), which takes a tree node, T, and returns the size (i.e. the number of nodes) of the tree rooted at T. 2. Write a SCHEME function named (tree-depth T) which takes a tree node, T, as a parameter and returns the depth of the tree rooted at T. For the purpose of this exercise, the depth of a tree rooted at T is one plus the maximum of the depths of its two children. 3. Define a SCHEMA function named (count-pred P tree) which given a binary tree and predicate function, P, applies the predicate to each of the values in the tree and returns the number of values for which the predicate returns #t (true). 4. Define a SCHEME function named count-one-child which returns the number of internal nodes of a binary tree which have exactly one child. Binary Search Trees (define (insert x T) (cond ((null? T) (make-tree x '() '())) ((eq? x (value T)) T) ((< x (value T)) (make-tree (value T) (right T))) (insert x (left T)) ((> x (value T)) (make-tree (value T) (left T) (insert x (right T))))))
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Transcribed Image Text:Bmary Trees Recall the following code from the lecture slides: (define (make-tree value left right) (list value left right)) (define (value T) (car T)) (define (right T) (caddr T)) (define (left T) (cadr T)) 1. Write a SCHEME function, named (tree-size T), which takes a tree node, T, and returns the size (i.e. the number of nodes) of the tree rooted at T. 2. Write a SCHEME function named (tree-depth T) which takes a tree node, T, as a parameter and returns the depth of the tree rooted at T. For the purpose of this exercise, the depth of a tree rooted at T is one plus the maximum of the depths of its two children. 3. Define a SCHEMA function named (count-pred P tree) which given a binary tree and predicate function, P, applies the predicate to each of the values in the tree and returns the number of values for which the predicate returns #t (true). 4. Define a SCHEME function named count-one-child which returns the number of internal nodes of a binary tree which have exactly one child. Binary Search Trees (define (insert x T) (cond ((null? T) (make-tree x '() '())) ((eq? x (value T)) T) ((< x (value T)) (make-tree (value T) (right T))) (insert x (left T)) ((> x (value T)) (make-tree (value T) (left T) (insert x (right T))))))
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