Write a program to print random numbers and whether they were
even or odd. Ask the user to enter a positive number to indicate
how many random numbers to pull (verify number is positive). Zero
is positive.
Declare two variables and initialized to zero.
int evens = 0, odds = 0;
Use them to count how many evens and how many odds were
pulled.
Enter how many random numbers to pull : 3
41
odd
18467 odd
6334 even
1 even and 2 odd random numbers were generated.
In: Computer Science
The following tables form part of a database held in a relational DBMS:
Hotel (hotelNo, hotelName, hotelAddress, country)
Room (roomNo, hotelNo, type, price)
Guest (guestNo, guestName, guestAddress, country)
Booking (hotelNo, guestNo, dateFrom, dateTo, roomNo)
Write the SQL statements for the following questions:
1. List the rooms that are currently unoccupied at the Grosvenor Hotel, for:
(a) Use 2019-10-01 as today's date. Include all 'Grosvenor' hotels. List in hotelNo, roomNo order. Use NOT IN to perform the difference operation
(b) Use 2019-10-01 as today's date. Include all 'Grosvenor' hotels. List in hotelNo, roomNo order. Use NOT EXISTS to perform the difference operation.
(c) Use 2019-10-01 as today's date. Include all 'Grosvenor' hotels. List in hotelNo, roomNo order. Use LEFT JOIN to perform the difference operation.
(d) Use 2019-10-01 as today's date. Include all 'Grosvenor' hotels. List in hotelNo, roomNo order. Use MINUS to perform the difference operation.
In: Computer Science
(PYTHON) Lottery program. The program randomly generates a two-digit number, prompts the user to enter a single two- digit number, and determines whether the user wins according to the following rules. Write a loop to let the user play as many times as the user wanted. Use a sentinel or flag to quit out of the loop.
1.if the user’s input matches the lottery In the exact order, the award is $10,000.
2.if all the digits in the user’s input match all the digits in the lottery number, the award is $3,000.
3. if one digit in the user’s input matches a digit in the lottery number, the award is $1,000.
In: Computer Science
Write 3 classes with three levels of hierarchy: Base, Derive (child of base), and D1 (child of Derive class). Within each class, create a “no-arg” method with the same signature (for example void m1( ) ). Each of this method (void m1( ) ) displays the origin of the Class type. Write the TestDynamicBinding Class: (the one with the ‘psvm’ ( public static void main (String[] args)) to display the following. You are NOT allowed to use the “standard object.m1() “to display the message in the main(…) method. That would NOT be polymorphic! (minus 10 points for not using polymorphic method) Explain why your solution demonstrates the dynamic binding behavior? (minus 5 points for lack of explanation) From Parent Class From Derived:Parent Class From Derived:Parent Class From D1:Derived Class Explain why this demonstrates dynamic polymorphism: (minus 4 points for lack of explanation)
In: Computer Science
JAVA) I need to get 10 integer numbers from the user. Then I need to find sum of odd numbers, sum of even numbers, the lowest number of all numbers, the highest number of all numbers, and the average of all numbers( use double, with the two digit decimal)
process;
loopCount = 1
While LoopCount <= 10
Read number from the keyboard
If odd, add to the total of all odd numbers
If even, add to the total of all even numbers
Add to the total of ALL numbers
Determine the smallest and largest number
Increment loopCount
End Loop Identify and display all three totals and range of numbers
Compute and display the average
In: Computer Science
Using Java,
Given an array A[0 ... n-1], where each element of the array represent a vote in the election. Assume that each vote is given as an integer representing the ID of the chosen candidate. Can you determine who wins the election? What is the complexity of your solution? Hint: it is similar to finding the element that is repeated the maximum number of times.
In: Computer Science
c++
students.txt
20
Shawn Lynch 2.0 Hasan Stephens 2.6 Frank Wright 2.7 Hugo Ray 2.9 Justin Gardner 3.0 Kelly Jenkins 2.2 Rafael Seymour 3.7 Jose Cantu 0.6 David Gilmore 1.3 Emma Paterson 2.1 Jackie White 1.9 Robert Green 3.8 Julio Armstrong 1.1 Erik Cook 4.0 Jessica Hale 3.0 Vanessa Rivera 0.9 Sandra Ferguson 3.1 Christian Wang 1.1 Jackson Martinez 1.9 Austin Black 4.0
For your program, you will need to define a class Student, with private members for first name, last name, and GPA, and any methods you determine that you need (constructors, gets/sets, etc.) Once the class is defined, you will need to populate an array of Student objects to be sorted with data provided in the students.txt file.
First line in the text file will be size of the array.
Every line after the first contains three pieces of information, separated by spaces: First Name, Last Name, and GPA
and sort the Student data by GPA.(Using MergeSort)
display unsorted data and sorted data
In: Computer Science
Let G be any context-free grammar. Show that the number of strings that have a derivation in G of length n or less, for any n > 0, is finite.
Could you please answer with clear explanation. The question is from Elaine Rich's Automata, Computability and Complexity Chapter 11 Exercise 14.
In: Computer Science
<HTML JAVASCRIPT>
Please create an array of student names and another array of student grades.
Create a function that can put a name and a grade to the arrays.
Keep Read student name and grade until student name is “???”. And save the reading by using a function
Create another function to show all the grade in that object.
Create the third function that can display the maximum grade and the student’s name.
Create a sorting function that can sort the arrays based on the student’s grade.
Display all the grades and names sorted by the grade.
[Report]
PLEASE POST OUTPUT IN NOTEPAD++ or NOTEPAD! Thanks
In: Computer Science
Averaging measurements: Use python 3 to write this program
Assume that someone has collected a set of measurements and wants some statistical data about them. Write a program that asks a user for measurements and prints the average, the maximum, and the minimum measurement. Users should be allowed to enter as many measurements as they want, until entering a negative measurement. The negative measurement should not be processed, but is just used to indicate that the user has finished entering measurements. [Note: do not use a list to store the measurements.]
Note: Complete without using import sys. Only use simple for and while loops and if else statements.
In: Computer Science
Summary
Jason, Samantha, Ravi, Sheila, and Ankit are preparing for an upcoming marathon. Each day of the week, they run a certain number of miles and write them into a notebook. At the end of the week, they would like to know the number of miles run each day and average miles run each day.
Instructions
Write a program to help them analyze their data. Your program must contain parallel arrays: an array to store the names of the runners and a two-dimensional array of five rows and seven columns to store the number of miles run by each runner each day. Furthermore, your program must contain at least the following functions:
In: Computer Science
Do a bit of research on penetration testing techniques. Investigate and document the following Five network penetration testing techniques Advantages and disadvantages of each One notable social engineering test Possible negative implications of penetration testing Please write between 200 and 300 words
In: Computer Science
Mention the model fit indices for determining the predictive accuracy of classification methods.
In: Computer Science
Can you give a java code example of using a singleton pattern and factory pattern design together?
In: Computer Science
Using Java, design a program that creates an array of
Card objects, shuffles them, then recursively sorts them by value
and then recursively sorts them by value and suit
You will need to create a Card class with the following two
fields:
• value (a String)
• suit (a String)
You may include any other fields, constructors, or methods as
needed.
Your single array will need to contain 52 card objects, one for
each value of each suit. The values to use are 2-10, J, Q, K, and
A, with A being the card with the highest value. The suit values to
use are H (for Hearts), D (for Diamonds), C (for Clubs), and S (for
Spades).
After building the array, shuffle the array using the Fisher-Yates
Algorithm. You must implement this algorithm yourself. After
shuffling, print each object’s value and suit to show the array was
shuffled. The output for each object printed should be VALUE -
SUIT. For example: 2 - H.
Then, you’ll need to recursively sort the array based on the
values. All 2 cards should be at the beginning and all A cards
should be at the end; The suit is irrelevant here. After sorting,
print each object’s value and suit again to show the array was
sorted based on the cards’ values.Finally, you’ll recursively sort
the array based on the values and suit. Clubs should be first, then
Diamonds, then Hearts, then Spades. Each suit should be sorted from
2-A. After sorting, print each object’s value and suit again to
show the array was sorted based on the cards’ values and
suits.
please comment
In: Computer Science