*4.6 (Random point on a circle) Write a program that generates three random pointson a circle centered at (0, 0) with radius 40 and display three angles in a triangleformed by these three points, as shown in Figure 4.5a. (Hint: Generate a randomangle a in radians between 0 and 27, as shown in Figure 4.5b and the point deter-mined by this angle is (r*cos(@), r*sin(æ)).)x= rxcos(a) and y = rxsin(a)0 o'clock position6065(0, 0)55(a)(b)FIGURE 4.5 (a) A triangle is formed from three random points on the circle. (b) A randompoint on the circle can be generated using a random angle a. (c) A pentagon is centered at(0, 0) with one point at the 0 o'clock position.

Here is the java program: public class Main { public static void main(String[] args) { final…

Answered: *4.6 (Random point on a circle) Write a…

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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2.25 (Divisible By 3) Write An Application That Reads An Integer And Determines And Prints Whether It's Divisible By 3 Or Not.
Q1) Write a program that • Asks for a natural number (Assume that number is n) • Draws the following triangular shape with n lines of numbers. Example: (n = 5) 1. 2 1 3 21 4 3 2 1 5 4 3 21 (n = 3) 1. 21 3 21 In the triangular shape, There is a space character between each neighboring numbers on the same line. • The rightmost number is supposed to be 1. • The numbers are ordered in a descending order. The ith line should contain i numbers. The numbers are aligned right.
19.16 LAB: Area of a triangle Using Heron's formula, you can calculate the area of a triangle if you know the lengths of all three sides. Given the length of each side of a triangle as input, calculate the area of the triangle using Heron's formula as follows: s = half of the triangle's perimeter area = the square root of s*(s-a)*(s-b)*(s-c), where a, b, and c are each sides of the triangle. Hint: Use the math function sqrt() for calculating the square root. Output the floating-point value of the area with two digits after the decimal point using the following statement once before all other cout statements:cout << fixed << setprecision(2); Ex: If the input for a, b, and c is: 3.0 4.0 5.0 the output is: Triangle area = 6.00 #include <iostream>#include <iomanip>#include <cmath>using namespace std; int main() { /* Type your code here. */ return 0;}
6.23 LAB: Leap year - functions A year in the modern Gregorian Calendar consists of 365 days. In reality, the earth takes longer to rotate around the sun. To account for the difference in time, every 4 years, a leap year takes place. A leap year is when a year has 366 days: An extra day, February 29th. The requirements for a given year to be a leap year are: 1) The year must be divisible by 4 2) If the year is a century year (1700, 1800, etc.), the year must be evenly divisible by 400 Some example leap years are 1600, 1712, and 2016. Write a program that takes in a year and determines whether that year is a leap year. Ex: If the input is: 1712 the output is: 1712 is a leap year. Ex: If the input is: 1913 the output is: 1913 is not a leap year. Your program must define and call the following function. The function should return True if the input year is a leap year or False otherwise.def is_leap_year(user_year) Use Python, please.
6.42 PROJECT: Dice Histogram Rolling a single six-sided die produces a random number between 1 and 6 with a uniform distribution. Rolling two dice produces a number between 2 and 12 with a binomial distribution. In this lab you will simulate a number of dice rolls and graph the number of occurrences of each value. 1) Create a function called rollDie() that takes no parameters, and returns a random value between 1 and 6. Do not seed the random number generator in this function. int rollDie() 2) Create a function called initArray() that takes a data array and the size of the array as parameters and fills each element with the summed results of rolling two dice. Do not assume that the data array has been initialized. void initArray(int data[], int size) 3) Create a function called sortArray() that takes an array and the size of the array as parameters, and sorts the array using the sediment sort. void sortArray(int data[], int size) The sediment sort works as follows: start with the…
6.19 LAB: Leap year - functions A common year in the modern Gregorian Calendar consists of 365 days. In reality, Earth takes longer to rotate around the sun. To account for the difference in time, every 4 years, a leap year takes place. A leap year is when a year has 366 days. An extra day, February 29th. The requirements for a given year to be a leap year are 1) The year must be divisible by 4 2) If the year is a century year (1700, 1800, etc.), the year must be evenly divisible by 400, therefore, both 1700 and 1800 are not leap years Some example leap years are 1600, 1712, and 2016. Write a program that takes in a year and determines the number of days in February for that year Ex. If the input is 1712 the output is 1712 has 29 days in February. Ex If the input is 1913 the output is 1913 has 28 days in February. Your program must define and call the following function. The function should return the number of days in February for the input year. def days in feb(user_year)
3.6 LAB: Number pattern Write a recursive function called print_num_pattern() to output the following number pattern. Given a positive integer as input (Ex: 12), subtract another positive integer (Ex: 3) continually until 0 or a negative value is reached, and then continually add the second integer until the first integer is again reached. For coding simplicity, output a space after every integer, including the last. Do not end output with a newline Ex. If the input is: 12 3 the output is 12 9 6 3 0 3 6 9 12 0/10 LAB ACTIVITY 3.6.1: LAB: Number pattern main.py Load default template 1. TODO: Write recursive print_num_pattern() function 2 3 if name "main": 4 numi int(input()) 5 num2 int(input()) print_num_pattern(num, num2)
5.18 Name Lookup The starter code creates a list of first names and a corresponding list of last names. The user is able to enter a first name to look up, which is stored in userInput. Loop through the list of names to find first names which match the user input, and output the corresponding first and last names. For example, if the user searches for 'Amanda', then the program outputs: The following matches were found: Amanda Gates If the user searches for 'Steve', then the program outputs: The following matches were found: Steve Moore Steve Jones If no match is found, then the program outputs: The following matches were found: (none) Hint: use the zip function to simultaneously iterate through the firstName list and lastName list. firstName = ['Joe', 'Amy', 'Sarah', 'Steve', 'Amanda', 'Steve']lastName = ['Johnson', 'Smith', 'Jenkins', 'Moore', 'Gates', 'Jones']
Revise Exercise 6.28 (Craps is a popular dice game played in casinos. Write a program to play a variation of the game, as follows:Roll two dice. Each die has six faces representing values 1, 2, ..., and 6, respectively. Check the sum of the two dice. If the sum is 2, 3, or 12 (called craps), you lose; if the sum is 7 or 11 (called natural), you win; if the sum is another value (i.e., 4, 5, 6, 8, 9, or 10), a point is established. Continue to roll the dice until either a 7 or the same point value is rolled. If 7 is rolled, you lose. Otherwise, you win.Your program acts as a single player.)to run it 10,000 times and display the number of winning games.
3.6 LAB: Number pattern Write a recursive function called print_num_pattern() to output the following number pattern. Given a positive integer as input (Ex: 12), subtract another positive integer (Ex: 3) continually until 0 or a negative value is reached, and then continually add the second integer until the first integer is again reached. For coding simplicity, output a space after every integer, including the last. Do not end output with a newline. Ex. If the input is: 12 3 the output is: 12 9 6 3 0 3 6 9 12
6.46 LAB: Subtracting list elements from max - methods (JAVA) When analyzing data sets, such as data for human heights or for human weights, a common step is to adjust the data. This can be done by normalizing to values between 0 and 1, or throwing away outliers. For this java program, adjust the values by subtracting each value from the maximum. The input begins with an integer indicating the number of integers that follow. Assume that the list will always contain between 1 and 20 integers. Ex: If the input is: 5 30 50 10 70 65 the output is: 40 20 60 0 5 For coding simplicity, follow every output value by a space, even the last one. Your program must define and call a method:public static int getMaxInt(int[] listInts, int listSize) Code starts here: import java.util.Scanner; public class LabProgram { /* Define your method here */ public static void main(String[] args) { /* Type your code here. */ }}
5.10 (Find numbers divisible by 5 and 6) Write a program that displays all the numbers from 100 to 1,000, ten per line, that are divisible by 5 and 6. Numbers are separated by exactly one space.

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