Select the lines of code in the right order to create a Scheme function that generates a list of X copies of value Y Sample call: (val-list 5 10) ==> '(5 5 5 5 5 555 5 5) (define val-list ( v [ Select ] (lambda (Y X) (Y X) (lambda Y X) [ Select ] [ Select ] ;ending parenthesis have been omitted to help hide answer

Select the lines of code in the right order to create a Scheme function that generates a list of X copies of value Y Sample call: (val-list 5 10) ==> '(5 5 5 5 5 555 5 5) (define val-list ( v [ Select ] (lambda (Y X) (Y X) (lambda Y X) [ Select ] [ Select ] ;ending parenthesis have been omitted to help hide answer

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Similar questions

Problem 1) Write a Scheme function that takes two atoms and a list as parameters and returns a list identical to the parameter list except all top-level instances of the first given atom in the list are replaced with the second given atom. Please include checks on your input.
Problem 2) Write a Scheme function that takes two atoms and a list as parameters and returns a list identical to the parameter list except all occurrences of the first given atom in the list are replaced with the second given atom, no matter how deeply the first atom is nested.
Consider the following Scheme function: (define (mystery input-list) (cond ((null? input-list) 0) (else (+ 1 (mystery (cdr input-list)))))) What is the result of invoking the function as follows? (mystery (list 3 4 5)) Explain what this function does in general.
(define (doit n) (if (= n 0) 0 (+ n (doit (- n 1))))) (print (doit 11)) Write the Scheme function from the question above, in Haskell.
Write a Scheme function that computes the real roots of a givenquadratic equation. If the roots are complex, the function must display amessage indicating that. This function must use an IF function. Thethree parameters to the function are the three coefficients of thequadratic equation.
Write a Scheme function mycount mylist myvar that counts the number of times myvar appears in the list mylist, where nylist is an arbitrary list and myvar 15 some value that might appear in a list,
2. Write a Scheme function numofatoms that determines the number of elements in a list. For example, (numOfSymbols '((1 3) 7 (4 (5 2) ) ) should return 6.
Problem 1) Write a Scheme function that takes two atoms and a list as parameters and returns a list identical to the parameter list except all top-level instances of the first given atom in the list are replaced with the second given atom. Please include checks on your input. Problem 2) Write a Scheme function that takes two atoms and a list as parameters and returns a list identical to the parameter list except all occurrences of the first given atom in the list are replaced with the second given atom, no matter how deeply the first atom is nested. What to submit Please submit your code. Also submit a paragraph explaining what your code does and why you believe it works. Finally submit screen shots from the execution of the code. It is enough to execute your functions on an online Scheme interpreter.
Create a SCHEME file/program that implements a quadratic equation solver and calls it with 1, 0, -25 1, 7, 12 1, 8, 16 2, 16, 32 Your choice Then implement a temperature conversion F to C, and C to F.
Write a Scheme function that computes the volume of a sphere, given itsradius.
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