Concept explainers
(Eight Queens) Another puzzler for chess buffs is the Eight Queens problem. Simply stated: Is it possible to place eight queens on an empty chessboard so that no queen is "attacking" any other. i.e., no two queens are in the same row, the same column. or along the same diagonal? Use the thinking the developed in Exercise 7.22 to formulate a heuristic for solving the Eight Queens problem. Run
7.26 The 22 squares eliminated by placing a queen in the upper-left corner.
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- (Python matplotlib or seaborn) CPU Usage We have the hourly average CPU usage for a worker's computer over the course of a week. Each row of data represents a day of the week starting with Monday. Each column of data is an hour in the day starting with 0 being midnight. Create a chart that shows the CPU usage over the week. You should be able to answer the following questions using the chart: When does the worker typically take lunch? Did the worker do work on the weekend? On which weekday did the worker start working on their computer at the latest hour? cpu_usage = [ [2, 2, 4, 2, 4, 1, 1, 4, 4, 12, 22, 23, 45, 9, 33, 56, 23, 40, 21, 6, 6, 2, 2, 3], # Monday [1, 2, 3, 2, 3, 2, 3, 2, 7, 22, 45, 44, 33, 9, 23, 19, 33, 56, 12, 2, 3, 1, 2, 2], # Tuesday [2, 3, 1, 2, 4, 4, 2, 2, 1, 2, 5, 31, 54, 7, 6, 34, 68, 34, 49, 6, 6, 2, 2, 3], # Wednesday [1, 2, 3, 2, 4, 1, 2, 4, 1, 17, 24, 18, 41, 3, 44, 42, 12, 36, 41, 2, 2, 4, 2, 4], # Thursday [4, 1, 2, 2, 3, 2, 5, 1, 2, 12, 33, 27, 43, 8,…arrow_forward(Java) The greatest common divisor of two positive whole numbers and n1 and n2 is the largest number g such that g evenly divided into both n1 and n2. Write a complete program that takes two positive whole numbers from the user and displays the common divisor.arrow_forward(GREATEST COMMON DIVISOR) The greatest common divisor of integers x and y is the largest integer that evenly divides into both x and y. Write and test a recursive function gcd that returns the greatest common divisor of x and y. The gcd of x and y is defined recursively as follows: If y is equal to 0, then gcd (x, y) is x; otherwise, gcd (x, y) is gcd (y, x % y), where % is the remainder operator.arrow_forward
- (Computer-Assisted Instruction: Reducing Student Fatigue) One problem in CAI environments is student fatigue. This can be reduced by varying the computer’s responses to hold the student’s attention. Modify the program of Exercise 6.57 so that various comments are displayed for each answer as follows: Possible responses to a correct answer: Very good!Excellent!Nice work!Keep up the good work! Possible responses to an incorrect answer: No. Please try again.Wrong. Try once more.Don't give up!No. Keep trying.Use random-number generation to choose a number from 1 to 4 that will be used to select one of the four appropriate responses to each correct or incorrect answer. Use a switch statement to issue the responses. ------------------------------ EXERCISE 6.57 CODE: ----------------------------- //Name: IhabAtouf//Date:02/23/2023// exercise 6.57 on page 281//program description: create computer-assisted instruction (CAI) program that help students master thier math skills in…arrow_forward(25 pt.) You are playing Scrabble and you draw seven tiles: M, A, T, C, H, E, S. You line them up in some random order on your tile rack (assume all orderings are equally likely). The events M, T, and S are defined as follows: M: The tiles M, A, T, H appear consecutively. T: The tile T appears exactly in the middle (fourth position). S: The tile S is either in the first position or in the final position. 5.1 (9 pt.) Calculate the probability of each event; that is, p(M), p(T), and p(5). 5.2 (4 pt.) What is p(M/T)? 5.3 (4 pt.) What is p(M|5)? 5.4 (4 pt.) What is p(T|S)? 5.5 (4 pt.) Consider all pairs of events: (M,T), (M,S), and (T.S). Which pairs of events are Independent and which pairs of events are not independent? Justify your answer.arrow_forward(Population projection) The U.S. Census Bureau projects population based on thefollowing assumptions:■■ One birth every 7 seconds■■ One death every 13 seconds■■ One new immigrant every 45 secondsWrite a program to display the population for each of the next five years. Assume thatthe current population is 312,032,486, and one year has 365 days. Hint: In Java, iftwo integers perform division, the result is an integer. The fractional part is truncated.For example, 5 / 4 is 1 (not 1.25) and 10 / 4 is 2 (not 2.5). To get an accurate resultwith the fractional part, one of the values involved in the division must be a numberwith a decimal point. For example, 5.0 / 4 is 1.25 and 10 / 4.0 is 2.5.arrow_forward
- (Recursion and Backtracking) Write the pseudo code for a recursive method called addB2D that takes two binary numbers as strings, adds the numbers and returns the result as a decimal integer. For example, addB2D(‘‘101’’, ‘‘11’’) should return 8 (because the strings are binary representation of 5 and 3, respectively). Your solution should not just simply convert the binary numbers to decimal numbers and add the re- sults. An acceptable solution tries to find the sum by just directly processing the binary representations without at first converting them to decimal values.arrow_forward(€) 10:08 ••. 4. Random walkers. Write a program RandomWalkers.java that takes two integer command-line arguments r and trials. In each of trials independent experiments, simulate a random walk until the random walker is at Manhattan distance r from the starting point. Print the average number of steps. -/Desktop/loops> java Randomwalkers 5 1000000 average number of steps = 14.98188 -/Desktop/loops> java Randomlalkers 5 1000000 average number of steps = 14.93918 -/Desktop/loops> java Randomlalkers 10 100000 average number of steps = 59.37386 -/Desktop/loops> java Randomlalkers 20 100000 average number of steps = 235.6288 -/Desktop/loops> java Randomwalkers 40 100000 average number of steps = 949.14712 -/Desktop/loops> java Randomwalkers 80 100000 average number of steps = 3775.7152 -/Desktop/loops> java Randomwalkers 160 100000 average number of steps = 15113.61108 As r increases, we expect the random walker to take more and more steps. But how many more steps? Use RandomWalkers.java…arrow_forward(True or False) Seven different positive integers are randomly chosen between 1 and 2022 (including 1 and 2022).There must be a pair of these integers has a difference that is a multiple of 6.arrow_forward
- (Q1)This is a Data Structures problem and the programming language used is Lisp. Solve the question we detailed steps and make it concise and easy to understand. Please and thank you.arrow_forward( MindTap - Cenage )Example 5-6 implements the Number Guessing Game program. If the guessed number is not correct, the program outputs a message indicating whether the guess is low or high. Modify the program as follows: Suppose that the variables num and guess are as declared in Example 5-6 and diff is an int variable. Let diff = the absolute value of (num - guess). If diff is 0, then guess is correct and the program outputs a message indicating that the user guessed the correct number. Suppose diff is not 0. Then the program outputs the message as follows: If diff is greater than or equal to 50, the program outputs the message indicating that the guess is very high (if guess is greater than num) or very low (if guess is less than num). If diff is greater than or equal to 30 and less than 50, the program outputs the message indicating that the guess is high (if guess is greater than num) or low (if guess is less than num). If diff is greater than or equal to 15 and less than 30, the…arrow_forward(Computer-Assisted Instruction) The use of computers in education is referred to as computer-assisted instruction (CAI). Write a program that will help an elementary school student learn multiplication. Use a Random object to produce two positive one-digit integers. The program should then prompt the user with a question, such as How much is 6 times 7? The student then inputs the answer. Next, the program checks the student’s answer. If it’s correct, display the message "Very good!" and ask another multiplication question. If the answer is wrong, display the message "No. Please try again." and let the student try the same question repeatedly until the student finally gets it right. A separate method should be used to generate each new question. This method should be called once when the application begins execution and each time the user answers the question correctly.arrow_forward
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