6. You are given the following function that will calculate the sum of the first n numbers where n is an argument to the function. When n is 10, it should print out 55, but instead it prints out 10. Find and fix the problem. int findsum (int n) int sum = 0; for (int i=1; i

6. You are given the following function that will calculate the sum of the first n numbers where n is an argument to the function. When n is 10, it should print out 55, but instead it prints out 10. Find and fix the problem. int findsum (int n) int sum = 0; for (int i=1; i

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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PYTHON Question 3: Rain or Shine Part 1: Alfonso will only wear a jacket outside if it is below 60 degrees or it is raining. Write a function that takes in the current temperature and a boolean value telling if it is raining and it should return True if Alfonso will wear a jacket and False otherwise. Try solving this problem with a single line of code. def wears_jacket(temp, raining): """ >>> wears_jacket(90, False) False >>> wears_jacket(40, False) True >>> wears_jacket(100, True) True """ *** YOUR CODE HERE *** Note that it should either return True or False based on a single condition, whose truthiness value will also be either True or False. Part 2: Rewrite the above function with a lambda expression.
This code is for Python Write a program that reads text from the user and reverses the order of every number that appears in the text. For example: Hello! The number is 17. will become Hello! The number is 71. To help with this problem, first write a function rev(text) that takes a string of text and returns the reverse. For example, rev("Oranges") would return 'segnaro". You may create any addition function you need. You must create the rev function. Your program will ask for a string of text and reverse and number. A number is defined as any sequence of digits 0-9. Remember to use if name=="_main": so that ZyBooks can test your rev function. Here are two examples. Welcome to Digit Flipper Enter Some Text: Hello! The number is 17. Revised String: Hello! The number is 71. The input may not have any spaces at all to break up the text. Welcome to Digit Flipper Enter Some Text: a123bb456bbsdfjhskdjh987sss1928 Revised String: a321bb654bbsdfjhskdjh789sss8291
2. Detecting whether two numbers entered by the user are friends function printable. If two numbers are equal to the sum of their positive divisors excluding each other, then these numbers are friends. is called. The smallest pair of friend numbers are 200 and 284. These two numbers are friend numbers because 220 is The sum of the positive divisors excluding itself is 284, and the positive divisors of 284 excluding itself are equal to 284. their sum is equal to 220. The sum of the positive divisors of 220 excluding itself: 1+2+4 + 5+ 10 + 11 + 20 + 22 + 44 + 55 + 110 = 284 The sum of the positive divisors of 284 excluding itself: 1+ 2+4 + 71 + 142 = 220 The function returns true if the two numbers entered by the user are friends, false if they are not.
Write a function that returns the average of the digits in the even places in an integer using the following header: double avgOfEvenPlaces(int n)
Part (a) Write a python function that computes the binomial coefficient ("). The function should return the correct answer for any positive integer n and k where k=m pass Part (c) Suppose that the number of people in the trial is 100. Then: • Plot a curve that shows how the probability of type 1 error changes with the choice of m, for m = 1,...n assuming that the null hypothesis holds (in red), • On the same picture, plot the probability of type 2 error vs the value of m in the case in which the new drug is effective with proability 0.68 (in blue). You can plot the two curves using matplotlib.pyplot. You can select the color by passing color='r' or color='b' to the plt.plot() function. [4]: n - 100 # your code here def plot_curve (): pass [5]: plot_curve() Part (d) Based on the picture above, what value of m do you think would be suitable to keep both type 1 and type 2 error small at the same time? (You may assume that the company claims the new drug has 68% accuracy) [6]: # your…
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Write a program that will:• Select a random number between 1 and 100.• Test if the number is prime• Call a function named isPrime(). Pass the number to be tested. isPrime() should test whetherthe number has any factors other than 1 and itself. isPrime() returns either True or False.• isPrime() should use a function isDivisible(x,y) to test if y divides evenly into x. That is,isDivisible() will identify whether y is a factor of x.• Print the result
# Write a function called ex4() which implements a "Guess the number" game# 1. Generate a random number between 1 and 100# See https://docs.python.org/3/library/random.html for random number# generation details # 1. Prompt the user with the rules of the game ('q' to quit)# 2. Iterively prompt a user for a guess# 3. Let the user know whether their last guess was high or low# 4. Count the number of guesses# 5. Congratulate them upon success. Print the number of guesses# 6. Prompt to play again or quit# 7. Proceed as directed by user.# 8. Invoke ex4() and play a game to print results
Python (this is not graded this is practice work that is not graded) write and test a function which takes two dates (month, day) list arguments.When the function is called with the two arguments, it returns the number of days betweenthose two dates. Print the returned value. It is assumed that the first date occurs first. Forinstance, if the users calls the function with FUNCTION([12, 10], [12, 20]) as arguments, thereturned value is 10 days. However, if FUNCTION([12, 20], [12, 10]) is called, the returnedvalue is -10 days.Assume February has 28 days.Test data: [10, 30], [5, 20] [1, 30], [5, 25] [5, 25], [1, 30] [1, 1], [12, 31]
python module must define four functions:a. add(a, b)b. subtract(a, b)c. multiply(a, b)d. divide(a, b)i. Divide must check for division by zero and return an error message if itencounters it.3. Each function should take two arguments and perform the corresponding mathematicaloperation. Return the result, don’t print it in the function.4. Include a main() function that tests these functions with some example inputs. Ensurethat you print the results of the function calls here in the main function and provide theappropriate labels.5. The main() function must only run automatically if the module is being run directly, notwhen imported.