Exercise #3 o Write a program averageLuminance(picture) which takes as input a picture uses functional programming to calculate the average luminance of the picture’s pixels. Use the helper function def luminance(pixel): r = getRed(pixel) g = getGreen(pixel) b = getBlue(pixxel) y = 0.2126 * r + 0.7152 * g + 0.0722 * b return y Within your main program, use map and luminance to create a list of luminances from the list of pixels. This is an example answer to help you formulate an answer for the question above: # Exercise 3 def isDocument(fileName): listOfEndings = [ ".docx", ".txt", ".rtf" ] for ending in listOfEndings: if fileName.endswith(ending): return True return False def recursiveListDocuments(directory=os.getcwd()): files = os.listdir(os.path.normpath(directory)) for file in files: fileName = os.path.normpath(directory + "/" + file) if isDirectory(fileName): recursiveListDocuments(fileName) else: if isDocument(fileName): print fileName

Exercise #3 o Write a program averageLuminance(picture) which takes as input a picture uses functional programming to calculate the average luminance of the picture’s pixels. Use the helper function def luminance(pixel): r = getRed(pixel) g = getGreen(pixel) b = getBlue(pixxel) y = 0.2126 * r + 0.7152 * g + 0.0722 * b return y Within your main program, use map and luminance to create a list of luminances from the list of pixels. This is an example answer to help you formulate an answer for the question above: # Exercise 3 def isDocument(fileName): listOfEndings = [ ".docx", ".txt", ".rtf" ] for ending in listOfEndings: if fileName.endswith(ending): return True return False def recursiveListDocuments(directory=os.getcwd()): files = os.listdir(os.path.normpath(directory)) for file in files: fileName = os.path.normpath(directory + "/" + file) if isDirectory(fileName): recursiveListDocuments(fileName) else: if isDocument(fileName): print fileName

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter6: User-defined Functions

Section: Chapter Questions

Problem 17PE

See similar textbooks

Similar questions

Implement in C Programming 6.10.2: Pass by pointer. Write a function call to ConvertMoney() to store the number of quarters, nickels, and pennies within the integer variables numQuarters, numNickels, and numPennies, respectively. Ex: If the input is 133, then the output is: Quarters: 5 Nickels: 1 Pennies: 3 #include <stdio.h> void ConvertMoney(int totalPennies, int* numQuarters, int* numNickels, int* numPennies) { *numQuarters = totalPennies / 25; totalPennies = totalPennies % 25; *numNickels = totalPennies / 5; totalPennies = totalPennies % 5; *numPennies = totalPennies;} int main(void) { int totalPennies; int numQuarters; int numNickels; int numPennies; scanf("%d", &totalPennies); /* Your code goes here */ printf("Quarters: %d\n", numQuarters); printf("Nickels: %d\n", numNickels); printf("Pennies: %d\n", numPennies); return 0;}
1. Implement function postal() that takes 6 inputs: a first name (as a string) a last name (as a string) an address (as a string) a city (as a string) a state (as a string) a zip code (as an integer)and then prints a mailing address in 3 lines as shown below.>>> postal('Ljubomir', 'Perkovic', '243 S Wabash Ave','Chicago', 'IL', 60304)Ljubomir Perkovic243 S Wabash AveChicago, IL 60304
Write a program in C++ using OOP, to create a class (student), that contain a private data (name, five grads). then create the following function: 1) (set_info()) to read the private data 2) (Print_info()) to Print student name and grades. 3) (Grade E()) as a friend function that calculate the grades average and print the student evaluation according to the following conditions: FAIL when (av=60 and av=70 and av 80 and av=90)
Define a function CalcPyramidVolume with double data type parameters baseLength, baseWidth, and pyramidHeight, that returns as a double the volume of a pyramid with a rectangular base. Relevant geometry equations:Volume = base area x height x 1/3Base area = base length x base width.(Watch out for integer division). #include <iostream>using namespace std; /* Your solution goes here */ int main() { double userLength; double userWidth; double userHeight; cin >> userLength; cin >> userWidth; cin >> userHeight; cout << "Volume: " << CalcPyramidVolume(userLength, userWidth, userHeight) << endl; return 0;}
Write a program called p3.py that contains a function called reveal_recursive() that takes a word (string) and the length of the word (int) as input and has the following functionality: 1. prints the word where all characters are replaced by underscores 2. continue to print the word revealing one character at a time. i.e., the second line printed should print the first character followed by “_”’s representing the rest of the word. (see example below) 3. the function should end after printing the entire word once. 4. This function should be recursive Example: #the word is kangaroo ________ k_______ ka______ kan_____ kang____ kanga___ kangar__ kangaro_ kangaroo
1.The following is the C code that you need to implement for this lab: uint8_ t f(uint8_tn) return(n<2)?(n):(f(n-1)+f(n-2)); The main function can be assumed as follows: int main() uint8_ t x; x=f(???); return 0; Obviously, " ? ? ? " is representing a value used to test the algorithm! Is "f"recursive? a.No answer text provided. b.Yes c.no d.depends on whether it is in for main 2.First, make the code in the previous question an actual C program so that it can be compiled and it runs. Play with it so that you feel comfortable with the logic of the code. Then implement the code in TTPASM. Note that you need to preserve the actual C code structure, this means you cannot it into a non-recursive subroutine. Furthermoreall conventions discussed in class regarding subroutines must be followed. The idea is that I should be able to substitute f with my own code, and main should work. Or, I can substitute main with my own, and f should work. Attach the source code of your assembly…
13. Implement function triangleArea(a,b,c) that takes as input the lengths of the 3 sides of a triangle and returns the area of the triangle. By Heron's formula, the area of atriangle with side lengths a, b, and c is √ s ( s−a )( s−b)( s−c ) , where s=(a+b+ c )/ 2 .>>> triangleArea(2,2,2)1.7320508075688772
Implement the following in a C project structure: - A function called Grader that takes a numeric score and returns a letter grade. Grader has one argument of type integer and returns a value of type char. Use the rule that 90 to 100 is an A, 80 to 90 is a B, 70 to 79 is a C, and less than 70 is an F. - The greatest common divisor of two positive integers is the largest integer that divides them both. For example, the greatest common divisor of 9 and 6 is 3. Write a function declaration for a function with two integer arguments that returns their greatest common divisor. - Write a function that accepts a character argument and returns 1 if the argument is a valid letter(a-z/A-Z), otherwise returns 0. - Write a function declaration for a function that computes interest on a credit card account balance. The function has arguments for the initial balance, the monthly interest rate, and the number of months for which interest must be paid. The value returned is the interest due. Do…
Draw Flowchart of this program // C# program for implementation // of Lagrange's Interpolation using System; class GFG { // To represent a data point // corresponding to x and y = f(x) class Data { public int x, y; public Data(int x, int y) { this.x = x; this.y = y; } }; // function to interpolate the given // data points using Lagrange's formula // xi corresponds to the new data point // whose value is to be obtained n // represents the number of known data points static double interpolate(Data []f, int xi, int n) { double result = 0; // Initialize result for (int i = 0; i < n; i++) { // Compute individual terms // of above formula double term = f[i].y; for (int j = 0; j < n; j++) { if (j != i) term = term * (xi - f[j].x) / (f[i].x - f[j].x); } // Add current term to result result += term; } return result; } // Driver code public static void Main(String[] args) { // creating an array of 4 known data points Data []f = {new Data(0, 2), new Data(1, 3), new Data(2, 12), new Data(5,…
PYTHON Call expressions, such as square(2), apply functions to arguments. When executing call expressions, we create a new frame in our diagram to keep track of local variables: Evaluate the operator, which should evaluate to a function. Evaluate the operands from left to right. Draw a new frame, labeling it with the following: A unique index (f1, f2, f3, ...) The intrinsic name of the function, which is the name of the function object itself.For example, if the function object is func square(x)[parent=Global], the intrinsic name is square. The parent frame ([parent=Global]) Bind the formal parameters to the argument values obtained in step 2 (e.g. bind x to 3). Evaluate the body of the function in this new frame until a return value is obtained. Write down the return value in the frame. If a function does not have a return value, it implicitly returns None. In that case, the “Return value" box should contain None. Let's put it all together! Draw an environment diagram for the…
Write a python program that contains a function called reveal_recursive() that takes a word (string) and the length of the word (int) as input and has the following functionality:1. prints the word where all characters are replaced by underscores2. continue to print the word revealing one character at a time. i.e., the second line printed should print the first character followed by “_”’s representing the rest of the word. (see example below)3. the function should end after printing the entire word once.4. This function should be recursive Example: #the word is kangaroo________k_______ka______kan_____kang____kanga___kangar__kangaro_kangaroo
in C++ please 1. Write a recursive function called sumover that has one argument n, which is an unsigned integer. The function returns a double value, which is the sum of the reciprocals of the first n positive integers. (The reciprocal of x is the fraction 1/ x .) For example, sumover(1) returns 1.0 (which is 1/1); sumover(2) returns 1.5 (which is 1/1 + 1/2); sumover(3) returns approximately 1.833 (which is 1/1 + 1/2 + 1/3). Define sumover(0) to be zero. Do not use any local vari- ables in your function. Submit output for when n=290 2. isPal funcitonImplement the recursive function isPal(), which determines whether a string str isa simple palindrome. A simple palindrome is a string consisting entirely of thecharacters a-z that reads the same forward and backward. For instance, theupcoming are palindromes: dad, level, mom, madamimadam,gohangasalamiimalasagnahog.Use the following declaration of isPal():bool isPal (const string& str, int startIndex, intendIndex);It returns true…