Homework Answers
(define foo (lamda (L)
(if (numm? L)
foo
(or (null? (car L))
(foo (cdr L))
)
)
)
This is not a tail-recursive function but can easily be transformed into a tail-recursive function by using a helper function.
This is the statement which best describes the above function.
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Which of the following statements best describes the following function. (define foo (lambda (L) (if (null?...
Consider this scheme function and explain it Consider the following Scheme function: (define f (lambda (1st)...
Consider this scheme function and explain it
Consider the following Scheme function: (define f (lambda (1st) (cond (null? 1st)) 0) ((number? (car 1st) (+ 1 (f (cdr 1st)))) (else (f (cdr 1st))))) Explain what the function f computes for lists. consider (f '(1 a b 2)) for example.
Using Racket Recursion, tail-recursion, high-order functions and functional programming. 1. Modify our filter function so that...
Using Racket Recursion, tail-recursion, high-order functions and functional programming. 1. Modify our filter function so that it is tail-recursive. You may use the letrec form but do not use any additional forms and functions besides those we've talked about in class. (define filter (lambda (input-list func) (cond ((null? input-list) '()) ((func (car input-list)) (cons (car input-list) (filter (cdr input-list) func))) (else (filter (cdr input-list) func))))) 2. Test your filter function on '(25 -22 44 56...
Use scheme to solve this: MUST USE A COMBINATION OF MAP AND FILTER or MAP AND...
Use scheme to solve this:
MUST USE A COMBINATION OF MAP AND FILTER or MAP AND
APPLY:
THIS ANSWER IS NOT WHAT I NEED:
(define perfect-square-helper
(lambda (x y)
(if (null? x)
(reverse y)
(if (integer? (sqrt (car x)))
(perfect-square-helper (cdr x) (cons (car x) y))
(perfect-square-helper (cdr x) y)))))
(define perfect-square
(lambda (x)
(perfect-square-helper x '())))
(define x '(1 2 9 16 5 64))
(perfect-square x)
Map/Apply/Filter 7. Perfect Squares (10 Points) Using a combination of map, apply and/or...
Which of the following statements best describes the function of the nephron loop? The nephron loop...
Which of the following statements best describes the function of the nephron loop? The nephron loop uses passive transport of NaCl to create a concentration gradient used to actively transport water. The nephron loop uses active transport of NaCl to create a concentration gradient used to passively transport water. The nephron loop uses passive transport of NaCl to create a concentration gradient used to passively transport water. The nephron loop uses active transport of NaCl to create a concentration gradient...
1. Explain the function/purpose of the following sequence of program statements by expressing the postcondition and...
1. Explain the function/purpose of the following sequence of program statements by expressing the postcondition and then prove that the program is correct using the axiomatic verification method. Precondition: {x = A and y = B} t=x x=y y=t Postcondition:________________ 2. Prove that the following grammar is ambiguous. <stmt> -> <assign> | <if-stmt> <assign> -> <id> := <expr> <if-stmt> -> if <bool> then <stmt> | if <bool> then <stmt> else <stmt> Modify the grammar above to make it unambiguous: 3....
Suppose you were debugging the push() function of your program. Which of the following variables would...
Suppose you were debugging the push() function of your program. Which of the following variables would be accessible to the debugger before the function is called? static struct node *stack; static struct node *new_node() { int size = sizeof(struct node); return malloc(size); void push(void *value) { struct node *n = new_node(); n->value = value; n->next = stack; stack = n; return malloc(size); void push (void *value) { struct node *n = new_node(); n->value = value; n->next = stack; stack =...
Which of the following statements best describes statistical inference?
Question 33 Which of the following statements best describes statistical inference? Drawing conclusions about a population based on a parameter Using descriptive statistics to draw conclusions about associations Deciding between two hypotheses based on sample data and probability Drawing conclusions about the presence of an outcome and the reasons for its existence None of the answers listed Question 34 When the results indicate a relative risk of 2.3 and we allow a 5% chance that the true value of the relative risk lies outside of the range 2,1...
which of the following statements best describes the relationship between the income statement and the balance...
which of the following statements best describes the relationship between the income statement and the balance sheet?
When analyzing recursive algorithms, which of the following best describes initial conditions? Initial conditions express the...
When analyzing recursive algorithms, which of the following best describes initial conditions? Initial conditions express the complexity of an algorithm Initial conditions express the number of times the basic operation executes when the base case is reached. Initial conditions express the number of times the basic operation runs during the first execution of the function. Initial conditions represent the condition for the base case of a recursive function
Which of the following statements best describes the primary purpose of Statements on Auditing Standards? A...
Which of the following statements best describes the primary purpose of Statements on Auditing Standards? A They are guides intended to set forth auditing procedures which are applicable to a variety of situations. B They are interpretations which may be useful guidance to auditors. C They are authoritative statements, enforced through the Code of Professional Conduct. D They are procedural outlines which are intended to narrow the areas of inconsistency and divergence of auditor opinion.
Consider this scheme function and explain it
Consider the following Scheme function: (define f (lambda (1st) (cond (null? 1st)) 0) ((number? (car 1st) (+ 1 (f (cdr 1st)))) (else (f (cdr 1st))))) Explain what the function f computes for lists. consider (f '(1 a b 2)) for example.
Use scheme to solve this:
MUST USE A COMBINATION OF MAP AND FILTER or MAP AND
APPLY:
THIS ANSWER IS NOT WHAT I NEED:
(define perfect-square-helper
(lambda (x y)
(if (null? x)
(reverse y)
(if (integer? (sqrt (car x)))
(perfect-square-helper (cdr x) (cons (car x) y))
(perfect-square-helper (cdr x) y)))))
(define perfect-square
(lambda (x)
(perfect-square-helper x '())))
(define x '(1 2 9 16 5 64))
(perfect-square x)
Map/Apply/Filter 7. Perfect Squares (10 Points) Using a combination of map, apply and/or...
Suppose you were debugging the push() function of your program. Which of the following variables would be accessible to the debugger before the function is called? static struct node *stack; static struct node *new_node() { int size = sizeof(struct node); return malloc(size); void push(void *value) { struct node *n = new_node(); n->value = value; n->next = stack; stack = n; return malloc(size); void push (void *value) { struct node *n = new_node(); n->value = value; n->next = stack; stack =...
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