Answer:
The program is written using PYTHON SCRIPT below;
N=int(input(" Enter number of Rows you want:"))
M=[] # this for storing the matrix
for i in range(N):
l=list(map(int,input("Enter the "+str(i+1)+" Row :").split()))
M.append(l)
print("The 2D Matrix is:\n")
for i in range(N):
print(end="\t")
print(M[i])
W=[] # to store the first non zero elemnt index
T=[] # to store that value is positive or negative
L=len(M[0])
for i in range(N):
for j in range(L):
if (M[i][j]==0):
continue
else:
W.append(j) # If the value is non zero append that postion to position list(W)
if(M[i][j]>0): #For checking it is positive or negative
T.append(+1)
else:
T.append(-1)
break
print()
print("The first Non Zero element List [W] : ",end="")
print(W)
print("Positive or Negative List [T] : ",end="")
print(T)
Explanation:
In order for the program to determine a set of test cases it takes in input of 2D matrix in an N numbet of rows.
It goes ahead to program and find the column index of the first non-zero value for each row in the matrix A, and also determines if that non-zero value is positive or negative. The If - Else conditions are met accordingly in running the program.
You are planning to use Spark to create a machine learning model that recommends restaurants to users based on user details and past ratings for restaurants What is the simplest way to implement this model? Use a Logistic Regression algorithm to train a classifier. Use a K-Means algorithm to create clusters. Use an alternating least squares (ALS) algorithm to create a collaborative filtering solution. Use a Decision Trees algorithm to train a regression model.
Answer:
The third point i.e " Use an alternating least squares (ALS) algorithm to create a collaborative filtering solution" is the correct answer .
Explanation:
The Alternating Less Squares is the different approach that main objective to enhancing the loss function.The Alternating Less Squares process divided the matrix into the two factors for optimizing the loss .The divided of two factor matrix is known as item matrix or the user matrix.
As we have to build the machine learning model which proposes restaurants to restaurants that are based on the customer information and the prior restaurant reviews the alternating least squares is the best model to implement this .All the other options are not the correct model also they are not related to given scenario that's why they are incorrect options.mm
Donte needs to print specific sections in the workbook, as opposed to the entire workbook. Which feature should he use?
Page Setup
Backstage view
Print Area
Option
Mark this and retum
Save and Exit
Answer:
Print Area
Explanation:
First, I'll assume Donte is making use of a spreadsheet application (Microsoft Office Excel, to be precise).
From the given options, only "Print Area" fits the given description in the question.
The print area feature of the Excel software allows users to print all or selected workbook.
To print a selection section, Donte needs to follow the steps below.
Go to File -> Print.
At this stage, Donte will have the option to set the print features he needs.
Under settings, he needs to select "Print Selection"; this will enable him Print sections of the entire workbook.
Refer to attachment for further explanation
Answer:
C. print area
Explanation:
which of the following correctly declares an array:
Choose one answer .
a. int array
b.array(10);
c.int array(10);
d.array array(10);
Answer:
a.
Explanation:
The option that correctly declares an array is int array.
What is an array?This is a term that connote a regular system or arrangement. Here, numbers or letters are said to be arranged in rows and columns.
In computing, An array is a term that describe memory locations box having the same name. All data in an array is said to be of the same data type.
Learn more about array from
https://brainly.com/question/26104158
Tamera and Rupert each applied for the same credit card through the same company. Tamera has a positive credit history. Rupert has a negative credit history.
Which compares their credit limits and likely interest rates?
Answer:
it is two by five credit limit
Answer:
Your answer is A Tamera’s credit limit is most likely higher than Rupert’s, and her interest rate is most likely lower.
Explanation:
I got it right on the test and I hope this answer helps
During testing, a student receives the incorrect answer back from a function that was supposed to be designed to return the largest value found in an array of double values provided as a parameter. Read the function definition used for this purpose, and identify the error:
int findMax (double arr [ ], int s )
{
int i;
int indexOfMax = 0;
double max = arr[0];
for ( i=1; i < s ; i++ )
{
if ( arr[ i ] > arr [indexOfMax] )
{
indexOfMax = i;
max = arr[indexOfMax];
}
}
return indexOfMax;
}
Answer:
dude what r u doin
Explanation:
A MySetOperations is a collection of functions, on which the following set operations are defined:
myIsEmpty(A): Returns T if the set A is empty (A = Φ), F otherwise.
myDisjoint(A,B): Returns T if intersection of the set A and set B is non-empty
(A â© B â Φ), F otherwise.
myIntersection(A,B): Returns the intersection of the set A and set B (A â© B).
myUnion(A,B): Returns the union of the set A and set B (A ⪠B).
Write a collection of MySetOperations in Python.
Note: For this problem, you can use only the standard flow Python's instructions and the set build-in operations: len, in, not in, and add.
Answer:
Explanation:
The objective here is to write a collection of MySetOperations in Python.
During the process of submitting this answer after computing the program ; I keep getting a response message that goes thus "It appears that your answer contains either a link or inappropriate words. Please correct and submit again!" . In the bid to curb such dilemma , i have created a word document for the collection of MySetOperations in Python.
The document can be seen in the attached file below.
p25: File Write and Read1) User enters a file name (such as "myMovies.txt").2) User enters the titles of 4 of their favorite moveis (use a loop!).3) Program Writes the 4 titles to a file, one per line, then closes the file (use a loop!).4) Program Reads the 4 titles from "myMovies.txt" stores them in a list and shows the list5) The program writes the titles in reverse order into a file "reverseOrder.txt"Sample Run:Please enter a file name: myMovies.txtPlease enter a movie title #1: movie1Please enter a movie title #2: movie2Please enter a movie title #3: movie3Please enter a movie title #4: movie4Writing the 4 movie titles to file 'myMovies.txt'Reading the 4 movie titles from file into a list: [movie1, movie2, movie3, movie4]Writing the 4 movie titles in revers to 'reverseOrder.txt'Note: Do not use reverse() , reversed()Content of myMovies.txt:movie1movie2movie3movie4Content of reverseOrder.txtmovie4movie3movie2movie1
Answer:
The program goes as follows
Comments are used to explain difficult lines
#include<iostream>
#include<fstream>
#include<sstream>
#include<string>
using namespace std;
int main()
{
//Declare String to accept file name
string nm;
//Prompt user for file name
cout<<"Enter File Name: ";
getline(cin,nm);
//Create File
ofstream Myfile(nm.c_str());
//Prompt user for 4 names of movies
string movie;
for(int i = 1;i<5;i++)
{
cout<<"Please enter a movie title #"<<i<<": ";
cin>>movie;
//Write to file, the names of each movies
Myfile<<movie<<endl;
}
Myfile.close(); // Close file
//Create an Array for four elements
string myArr[4];
//Prepare to read from file to array
ifstream file(nm.c_str());
//Open File
if(file.is_open())
{
for(int i =0;i<4;i++)
{
//Read each line of the file to array (line by line)
file>>myArr[i];
}
}
file.close(); // Close file
//Create a reverseOrder.txt file
nm = "reverseOrder.txt";
//Prepare to read into file
ofstream Myfile2(nm.c_str());
for(int j = 3;j>=0;j--)
{
//Read each line of the file to reverseOrder.txt (line by line)
Myfile2<<myArr[j]<<endl;
}
Myfile2.close(); //Close File
return 0;
}
See attached for .cpp program file
Which body of water is most likely to be a marine ecosystem?
Answer:
The body of water that is most likely to be a marine ecosystem would be an estuary.
Explanation:
An estuary is a widened, often funnel-shaped mouth of a river, where fresh river water and salt sea water are mixed and thus brackish water is created, and where tidal differences can be observed. When a river flows as a system of branches, it is called a delta.
Estuaries often have a great natural value. They typically consist of swallows and salt marshes that are very rich in invertebrates and thus have a great attraction for birds, among other things.
ALAP Help
what is a computer
Answer:An electronic device for storing and processing data, typically in binary form
Explanation:
How the full address space of a processor is partitioned and how each partition is used?
Answer:
?
Explanation:
?
// isOrdered
//
// return true if the queue contents are in increasing order (back to front)
// Queue may be empty ; in which case the function should return true
// You must solve this USING RECURSION; you will need to use a helper function
// You may not use:
// any other Java classes, algorithms,
// the toString instance method
// You may not alter the invoking queue
//
// here are some conceptual examples ( they also mirror what your linked lists will look like)
// the back is on the left and the front is on the right.
// Example 1. A B C D E F G H I J --> answer true ,
// Example 2. C B A --> answer false
// Example 3. C --> answer true
//
Answer:
honestly i dont know but I used to have computer programming classes on java and I'd get all my answers from repl.it forums. Wist you best of luck!!
We have three containers whose sizes are 10 pints, 7 pints, and 4 pints, respectively. The 7-pint and 4-pint containers start out full of water, but the 10-pint container is initially empty. We are allowed one type of operation: pouring the contents of one container into another, stopping only when the source container is empty or the destination container is full. We want to know if there is a sequence of pourings that leaves exactly 2 pints in the 7-pint or 4-pint container.
(a) Model this as a graph problem: give a precise definition of the graph involved and state the specific question about this graph that needs to be answered.
(b) What algorithm should be applied to solve the problem?
(c) Find the answer by applying the algorithm.
Answer:
well, idc
Explanation:
Consider the following C program: void fun(void) { int a, b, c; /* definition 1 */ ... while (...) { int b, c, d; /* definition 2 */ ... <------------------ 1 while (...) { int c, d, e; /* definition 3 */ ... <-------------- 2 } ... <------------------ 3 }... <---------------------- 4 } For each of the four marked points in this function, list each visible variable, along with the number of the definition statement that defines it.
Answer:
Check the explanation
Explanation:
1.
void func(void){
int a,b,c; /*definition 1*/
/////* a,b,c for definition 1 are visible */
//// d, e are not visible
while(...){
int b, c, d; /* definition 2*/
////*
a from definition 1 is visible
b, c, d from definition 2 are visible
*/ ///
while(...){
int c, d, e;/* definition 3*/
////*
a from definition 1 is visible
b from definition 2 is visible
c, d, e from definition 3 are visible
*/ ///
}
////*
a from definition 1 is visible
b, c, d from definition 2 are visible
e not visible
*////
}
/////* a,b,c for definition 1 are visible */
///// d, e are not visible
}
You and your friends are driving to Tijuana for springbreak. You are saving your money for the trip and so you want to minimize the cost of gas on the way. In order to minimize your gas costs you and your friends have compiled the following information.
First your car can reliably travel m miles on a tank of gas (but no further). One of your friends has mined gas-station data off the web and has plotted every gas station along your route along with the price of gas at that gas station. Specifically they have created a list of n+1 gas station prices from closest to furthest and a list of n distances between two adjacent gas stations. Tacoma is gas station number 0 and Tijuana is gas station number n. For convenience they have converted the cost of gas into price per mile traveled in your car. In addition the distance in miles between two adjacent gas-stations has also been calculated. You will begin your journey with a full tank of gas and when you get to Tijuana you will fill up for the return trip.
You need to determine which gas stations to stop at to minimize the cost of gas on your trip.
1. Express this problem formally with input and output conditions.
2. State a self-reduction for your problem.
3. State a dynamic programming algorithm based off your seld reduction that computes the minimum gas cost.
Answer:
Explanation:
.Car can Travel a m miles tank on a gas
2.For N distance there are n+1 adjacent gas stations.
Output Conditions:
Tacoma will fill the gas station while going.
Tijuana will fill up gas for the return trip
3.Dynamic self Reduction Algorithm
Start
if(n==0)
Tacoma is a gas station number 0;
else
Tijuana is a gas station n+1;
stop
How many seconds are required to make a left turn and join traffic?
Write a C++ program that opens and reads file question2.txt. File question1.txt has 3 students and 3 grades of each. You program should read values from file and assign values to 4 variables: (string) name, (double) grade1, (double) grade2, (double) grade3. Then, it should calculate the average grade of each student with the precision of 2 (use setprecision(n) function from header file) and find maximum and minimum grade in the class. Finally, you should have a report on both: • console screen • Output file named output2.txt in the following output format: Max Grade max Min Grade min Adam ave_grade John ave_grade Bill ave_grade
Answer:
see explaination
Explanation:
#include <fstream>
#include <iostream>
#include <string>
//to set precision
#include <iomanip>
#include <bits/stdc++.h>
//structure of student is created.
struct Student
{
std::string name;
double grade1;
double grade2;
double grade3;
double Average;
// Constructor initializes semester scores to 0.
Student()
{
grade1 = 0;
grade2 = 0;
grade3 = 0;
Average = 0;
}
//Read from the file and calculate the average, min and max grade with name.
void read(std::fstream& fil)
{
std::string temp;
fil >> name;
fil >> temp;
grade1 = std::stod(temp);
fil >> temp;
grade2 = std::stod(temp);
fil >> temp;
grade3 = std::stod(temp);
Average = ((grade1 + grade2 + grade3) /3.0);
}
//write to file- name and average with precision 2.
void write(std::fstream& fil)
{
fil << name << " " << std::setprecision(2) << std::fixed << Average << std::endl;
}
//Logic to calculate the minimum grade of the class.
double min()
{
double min = grade1;
if(min > grade2)
{
min = grade2;
}
if(min > grade3)
{
min = grade3;
}
return min;
}
//Logic to calculate the maximum grade of the class.
double max()
{
double max = grade1;
if(max < grade2)
{
max = grade2;
}
if(max < grade3)
{
max = grade3;
}
return max;
}
//Print the name and average with precision 2 in the console.
void print()
{
std::cout << name << " " ;
std::cout << std::setprecision(2) << std::fixed << Average << std::endl;
}
};
//As per this question,students are set to 3.
Student students[3];
//main method.
int main()
{
// Read from the file question2.txt
std::fstream fil;
fil.open("question2.txt", std::ios::in);
for(int i = 0; i < 3; i++)
students[i].read(fil);
fil.close();
// finding the max grade of the class.
int max = students[0].max();
int temp = students[1].max();
if(max <temp)
max = temp;
temp = students[2].max();
if(max < temp)
max = temp;
// finding the min grade of the class.
int min = students[0].min();
temp = students[1].min();
if(min > temp)
min = temp;
temp = students[2].min();
if(min > temp)
min = temp;
// print the output in console.
std::cout << "Max Grade " << max << std::endl;
std::cout << "Min Grade " << min << std::endl;
for(int i = 0; i < 3; i++)
students[i].print();
// write to output file output2.txt .
fil.open("output2.txt", std::ios::out);
fil << "Max Grade " << max << std::endl;
fil << "Min Grade " << min << std::endl;
for(int i = 0; i < 3; i++)
students[i].write(fil);
fil.close();
return 0;
}
Create two files to submit:
ItemToPurchase.java - Class definition
ShoppingCartPrinter.java - Contains main() method
Build the ItemToPurchase class with the following specifications:
Private fields
String itemName - Initialized in default constructor to "none"
int itemPrice - Initialized in default constructor to 0
int itemQuantity - Initialized in default constructor to 0
Default constructor
Public member methods (mutators & accessors)
setName() & getName()
setPrice() & getPrice()
setQuantity() & getQuantity()
(2) In main(), prompt the user for two items and create two objects of the ItemToPurchase class. Before prompting for the second item, call scnr.nextLine(); to allow the user to input a new string.
Answer:
Explanation:
public class ItemToPurchase {
private String itemName ;
private int itemPrice;
private int itemQuantity;
public ItemToPurchase(){
itemName = "none";
itemPrice = 0;
itemQuantity = 0;
}
public String getName() {
return itemName;
}
public void setName(String itemName) {
this.itemName = itemName;
}
public int getPrice() {
return itemPrice;
}
public void setPrice(int itemPrice) {
this.itemPrice = itemPrice;
}
public int getQuantity() {
return itemQuantity;
}
public void setQuantity(int itemQuantity) {
this.itemQuantity = itemQuantity;
}
}
ShoppingCartPrinter.java
import java.util.Scanner;
public class ShoppingCartPrinter {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
ItemToPurchase item1 = new ItemToPurchase();
ItemToPurchase item2 = new ItemToPurchase();
System.out.println("Item 1");
System.out.print("Enter the item name: ");
String name1 = scan.nextLine();
System.out.print("Enter the item price: ");
int price1 = scan.nextInt();
System.out.print("Enter the item quantity: ");
int quantity1 = scan.nextInt();
item1.setName(name1);
item1.setPrice(price1);
item1.setQuantity(quantity1);
scan.nextLine();
System.out.println("Item 2");
System.out.print("Enter the item name: ");
String name2 = scan.nextLine();
System.out.print("Enter the item price: ");
int price2 = scan.nextInt();
System.out.print("Enter the item quantity: ");
int quantity2 = scan.nextInt();
item2.setName(name2);
item2.setPrice(price2);
item2.setQuantity(quantity2);
System.out.println("TOTAL COST");
int item1Total = item1.getPrice() * item1.getQuantity();
int item2Total = item2.getPrice() * item2.getQuantity();
System.out.println(item1.getName()+" "+item1.getQuantity()+" for $"+item1.getPrice()+" = $"+item1Total);
System.out.println(item2.getName()+" "+item2.getQuantity()+" for $"+item2.getPrice()+" = $"+item2Total);
System.out.println();
System.out.println("Total: $"+(item1Total + item2Total));
ItemToPurchase.java
======================================================
package brainly;
//Class header definition for class ItemToPurchase
public class ItemToPurchase {
//Write the private fields
private String itemName;
private int itemPrice;
private int itemQuantity;
//Create the default constructor
//And initialize all the fields to their respective initial values
public ItemToPurchase(){
this.itemName = "none";
this.itemPrice = 0;
this.itemQuantity = 0;
}
//Create the accessor methods as follows:
public String getItemName() {
return itemName;
}
public void setItemName(String itemName) {
this.itemName = itemName;
}
public int getItemPrice() {
return itemPrice;
}
public void setItemPrice(int itemPrice) {
this.itemPrice = itemPrice;
}
public int getItemQuantity() {
return itemQuantity;
}
public void setItemQuantity(int itemQuantity) {
this.itemQuantity = itemQuantity;
}
} // End of class definition
=======================================================
ShoppingCartPrinter.java
=======================================================
package brainly;
//import the Scanner class
import java.util.Scanner;
//Class header definition for class ShoppingCartPrinter
public class ShoppingCartPrinter {
public static void main(String[] args) {
//Create an object of the Scanner class
Scanner scnr = new Scanner(System.in);
//prompt the user to enter the name of first item
System.out.println("Item 1: Enter the item name");
//Store the input in a String variable
String firstItemName = scnr.nextLine();
//Prompt the user to enter the price of the first item
System.out.println("Enter the item price");
//Store the input in an int variable
int firstItemPrice = scnr.nextInt();
//Prompt the user to enter the quantity of the first item
System.out.println("Enter the item quantity");
//Store the input in an int variable
int firstItemQuantity = scnr.nextInt();
//Call the scnr.nextLine() method to allow user enter the
// second item
scnr.nextLine();
//Prompt the user to enter the name of the second item
System.out.println("Item 2: Enter the item name");
//Store the input in a String variable
String secondItemName = scnr.nextLine();
//Prompt the user to enter the price of the second item
System.out.println("Enter the item price");
//Store the input in an int variable
int secondItemPrice = scnr.nextInt();
//Prompt the user to enter the quantity of the second item
System.out.println("Enter the item quantity");
//Store the input in an int variable
int secondItemQuantity = scnr.nextInt();
//Create the first object using the first item
ItemToPurchase item1 = new ItemToPurchase();
//Create the second object using the second item
ItemToPurchase item2 = new ItemToPurchase();
//Get the total cost of the first item
int totalcostofitem1 = firstItemPrice * firstItemQuantity;
//Get the total cost of the second item
int totalcostofitem2 = secondItemPrice * secondItemQuantity;
//Calculate total cost of the two items
int total = totalcostofitem1 + totalcostofitem2;
//Print out the result.
System.out.println("Total: $" + total);
}
}
=======================================================
Sample Output=======================================================
>> Item 1: Enter the item name
Chocolate Chips
>> Enter the item price
3
>> Enter the item quantity
1
>> Item 2: Enter the item name
Bottled Water
>> Enter the item price
1
>>Enter the item quantity
10
>>Total: $13
======================================================
Explanation:The above code has been written in Java and it contains comments explaining every line of the code. Please go through the comments carefully.
The actual lines of code are written in bold face to distinguish them from comments.
Also, in the sample output, the user inputs are written in bold face.
The following table contains data about projects and the hours charged against them:
ProjectBilling:
ProjectNbr ProjectName EmployeeNbr EmployeeName JobClass HourlyRate HoursBilled
15 Evergreen 103 June Phillips SA-3 96.75 23.8
15 Evergreen 101 John Baker DD-5 105.00 19.4
15 Evergreen 105 Alice Miller DD-5 105.00 35.7
15 Evergreen 106 William Smithfield SA-2 62.50 12.6
18 Amber Wave 114 Anna Jones SA-1 55.00 23.8
18 Amber Wave 101 John Baker DD-5 105.00 24.6
18 Amber Wave 112 Brad White SA-3 96.75 45.3
22 Starlight 107 Terry Ray SA-2 62.50 32.4
22 Starlight 115 Peter Novak SA-3 96.75 44.0
22 Starlight 101 John Baker DD-5 105.00 64.7
22 Starlight 114 Anna Jones SA-1 55.00 48.4
22 Starlight 108 Susan Brown SA-2 62.50 23.6
(A) Convert the table to 3NF.
Answer:
The final tables in 3NF are as follows.
Project( ProjectNbr, ProjectName)
Employee( EmployeeNbr, EmployeeName, JobClass)
Job( JobClass, HourlyRate)
ProjectBilling( ProjectNbr, EmployeeNbr, HoursBilled)
Explanation:
The given table is given below.
ProjectBilling( ProjectNbr, ProjectName, EmployeeNbr, EmployeeName, JobClass, HourlyRate, HoursBilled)
ProjectNbr -> ProjectName
EmployeeNbr -> EmployeeName
JobClass -> HourlyRate
ProjectNbr, EmployeeNbr -> HoursBilled
1NF
1. All the fields in the given table contain only a single value. The table is in 1NF.
2NF
2. New tables are formed based on the given functional dependencies.
Project( ProjectNbr, ProjectName)
Employee( EmployeeNbr, EmployeeName)
Job( JobClass, HourlyRate)
ProjectBilling( ProjectNbr, EmployeeNbr, HoursBilled)
3. Every table is assigned a primary key which are as follows.
ProjectNbr is the primary key for Project table.
EmployeeNbr is the primary key for Project table.
JobClass is the primary key for Project table.
(ProjectNbr, EmployeeNbr) is the composite primary key for the ProjectBilling table.
4. The tables which are related to each other are linked via primary key and foreign key.
5. In the ProjectBilling table, the composite primary key, ProjectNbr, EmployeeNbr is composed of the primary keys of the Project and Employee tables, i.e., ProjectNbr and EmployeeNbr respectively.
6. Job table is related to Employee table. Hence, primary key of Job table, JobClass, is introduced as foreign key in Employee table.
Employee( EmployeeNbr, EmployeeName, JobClass)
7. Partial dependency arises when composite primary key exists and non-prime attributes (columns other than the primary key) depend on a part of the primary key, i.e., partial primary key.
In the ProjectBilling table, no partial dependency exists.
8. All the tables are in 2NF as given below.
Project( ProjectNbr, ProjectName)
Employee( EmployeeNbr, EmployeeName, JobClass)
Job( JobClass, HourlyRate)
ProjectBilling( ProjectNbr, EmployeeNbr, HoursBilled)
3NF
9. All the tables are in 2NF.
10. In every table, all non-prime attribute depend only on the primary key.
11. No transitive dependency exists, i.e., all non-prime attributes do not depend on other non-prime attributes.
12. Hence, all the conditions are satisfied and the tables are in 3NF.
Write a method that sums all the numbers in the major diagonal in an n x n matrix of double values using the following header: public static double sumMajorDiagonal(double[][] m) Write a test program that first prompts the user to enter the dimension n of an n x n matrix, then asks them to enter the matrix row by row (with the elements separated by spaces). The program should then print out the sum of the major diagonal of the matrix.
Answer:
Following are the code to this question:
import java.util.*; //import package for user input
public class Main //defining main class
{
public static double sumMajorDiagonal(double [][] m) //defining method sumMajorDiagonal
{
double sum = 0; //defining double variable sum
int i, j; //defining integer variable
for(i = 0; i <m.length; i++) //defining loop to count row
{
for(j = 0; j < m.length; j++) //defining loop to count column
{
if(i == j) //defining condition to value of i is equal to j
{
sum=sum+ m[i][j]; //add diagonal value in sum variable
}
}
}
return sum; //return sum
}
public static void main(String args[]) //defining main method
{
int n,i,j; //defining integer variable
System.out.print("Enter the dimension value: "); //print message
Scanner ox = new Scanner(System.in); //creating Scanner class object for user input
n = Integer.parseInt(ox.nextLine()); //input value and convert value into integer
double m[][] = new double[n][n]; //defining 2D array
for(i = 0; i < m.length; i++)
{
String t = ox.nextLine(); // providing space value
String a[] = t.split(" "); // split value
for(j = 0; j < a.length; j++) //defining loop to count array value
{
double val = Double.parseDouble(a[j]); //store value in val variable
m[i][j] = val; //assign val in to array
}
}
double d_sum = sumMajorDiagonal(m); //call method store its return value in d_sum variable
System.out.println("diagonal matrix sum: "+ d_sum); //print sum
}
}
output:
Enter the dimension value: 3
1 2 3
1 2 3
1 2 4
diagonal matrix sum: 7.0
Explanation:
Program description:
In the given java language code, a method "sumMajorDiagonal" is declared, that accepts a double array "m" in its parameter, inside the method two integer variable "i and j" and one double variable "sum" is defined, in which variable i and j are used in a loop to count array value, and a condition is defined that checks its diagonal value and use sum variable to add its value and return its value. In the main method first, we create the scanner class object, that takes array elements value and passes into the method, then we declared a double variable d_sum that calls the above static method, that is "sumMajorDiagonal" and print its return value with the message.A contiguous subsequence of a list S is a subsequence made up of consecutive elements of S. For example, if S is 5,15,-30,10,-5,40,10 then 5,15,-30 is a contiguous subsequence but 5,15,40 is not.
1. Give a linear-time algorithm for the following task:
Input: A list of numbers, A(1), . . . , A(n).
Output: The contiguous subsequence of maximum sum (a subsequence of length zero has sum zero).
For the preceding example, the answer would be 10,-5,40,10 with a sum of 55.
Answer:
We made use of the dynamic programming method to solve a linear-time algorithm which is given below in the explanation section.
Explanation:
Solution
(1) By making use of the dynamic programming, we can solve the problem in linear time.
Now,
We consider a linear number of sub-problems, each of which can be solved using previously solved sub-problems in constant time, this giving a running time of O(n)
Let G[t] represent the sum of a maximum sum contiguous sub-sequence ending exactly at index t
Thus, given that:
G[t+1] = max{G[t] + A[t+1] ,A[t+1] } (for all 1<=t<= n-1)
Then,
G[0] = A[0].
Using the above recurrence relation, we can compute the sum of the optimal sub sequence for array A, which would just be the maximum over G[i] for 0 <= i<= n-1.
However, we are required to output the starting and ending indices of an optimal sub-sequence, we would use another array V where V[i] would store the starting index for a maximum sum contiguous sub sequence ending at index i.
Now the algorithm would be:
Create arrays G and V each of size n.
G[0] = A[0];
V[0] = 0;
max = G[0];
max_start = 0, max_end = 0;
For i going from 1 to n-1:
// We know that G[i] = max { G[i-1] + A[i], A[i] .
If ( G[i-1] > 0)
G[i] = G[i-1] + A[i];
V[i] = V[i-1];
Else
G[i] = A[i];
V[i] = i;
If ( G[i] > max)
max_start = V[i];
max_end = i;
max = G[i];
EndFor.
Output max_start and max_end.
The above algorithm takes O(n) time .
Write a BASH script to create a user account. The script should process two positional parameters: o First positional parameter is supposed to be a string with user name (e.g., user_name) o Second positional parameter is supposed to be a string with user password (e.g., user_password) The script should be able to process one option (use getopts command): o Option -f arg_to_opt_f that will make your script direct all its output messages to file -arg_to_opt_f
#!/bin/bash
usage() {
echo "Usage: $0 [ -f outfile ] name password" 1>&2
exit 1
}
while getopts "f:" o; do
case "${o}" in
f)
filename=${OPTARG}
;;
*)
usage
;;
esac
done
shift $((OPTIND-1))
name=$1
password=$2
if [ -z "$password" ] ; then
usage
fi
set -x
if [ -z "$filename" ] ; then
useradd -p `crypt $password` $name
else
useradd -p `crypt $password` $name > $filename
fi
In the RSA system, the receiver does as follows:1. Randomly select two large prime numbers p and q, which always must bekept secret.2. Select an integer number E, known as the public exponent, such that (p 1)and E have no common divisors, and (q 1) and E have no commondivisors.3. Determine the private exponent, D, such that (ED 1) is exactly divisible byboth (p 1) and (q 1). In other words, given E, we choose D such that theinteger remainder when ED is divided by (p 1)(q 1) is 1.4. Determine the product n = pq, known as public modulus.5. Release publicly the public key, which is the pair of numbers n and E, K =(n, E). Keep secret the private key, K = (n, D).The above events are mentioned in the correct order as they are performed whilewriting the algorithm.Select one:TrueFalse
Answer:
False.
Explanation:
The correct option is false that is to say the arrangement is not true. So, let us check one or two things about the RSA System.
The RSA system simply refer to as a cryptosystem that was first established in the year 1973 but was later developed in the year 1977 by Ron Rivest, Adi Shamir and Leonard Adleman.
The main use of the RSA system is for encryption of messages. It is known as a public key cryptography algorithm.
The way the algorithm should have been arranged is;
(1). Randomly select two large prime numbers p and q, which always must bekept secret.
(2). Determine the product n = pq, known as public modulus.
(3). Select an integer number E, known as the public exponent, such that (p 1)and E have no common divisors, and (q 1) and E have no commondivisors.
(4). Determine the private exponent, D, such that (ED 1) is exactly divisible by both (p 1) and (q 1). In other words, given E, we choose D such that the integer remainder when ED is divided by (p1)(q 1) is 1.
(5). Release publicly the public key, which is the pair of numbers n and E, K =(n, E). Keep secret the private key, K = (n, D).
Therefore, The way it should have been arranged in the question should have been;
(1) , (4), (2), (3 ) and ( 5).
Suppose an 80286 microprocessor is in protected mode. How it is switched back
to real address mode operations.
Answer:
hardware-initiated reset
Explanation:
Once in protected mode, the 80286 is designed to remain there until it is reset by hardware.
__
External hardware can be designed so that software can cause such a reset. In the 1984 PC/AT, such hardware combined with code in the BIOS allowed real mode re-entry and returned execution control to the program that caused the reset.
Write a program that prompts the user to enter the area of the flat cardboard. The program then outputs the length and width of the cardboard and the length of the side of the square to be cut from the corner so that the resulting box is of maximum volume. Calculate your answer to three decimal places. Your program must contain a function that takes as input the length and width of the cardboard and returns the side of the square that should be cut to maximize the volume. The function also returns the maximum volume.
Answer:
A program in C++ was written to prompts the user to enter the area of the flat cardboard.
Explanation:
Solution:
The C++ code:
#include <iostream>
#include <iomanip>
#include <cmath>
using namespace std;
double min(double,double);
void max(double,double,double&,double&);
int main()
{double area,length,width=.001,vol,height,maxLen,mWidth,maxHeight,maxVolume=-1;
cout<<setprecision(3)<<fixed<<showpoint;
cout<<"Enter the area of the flat cardboard: ";
cin>>area;
while(width<=area)
{length=area/width;
max(length,width,vol,height);
if(vol>maxVolume)
{maxLen=length;
mWidth=width;
maxHeight=height;
maxVolume=vol;
}
width+=.001;
}
cout<<"dimensions of card to maximize the cardboard box which has a volume "
<<maxVolume<<endl;
cout<<"Length: "<<maxLen<<"\nWidth: "<<maxLen<<endl;
cout<<"dimensions of the cardboard box\n";
cout<<"Length: "<<maxLen-2*maxHeight<<"\nWidth: "
<<mWidth-2*maxHeight<<"\nHeight: "<<maxHeight<<endl;
return 0;
}
void max(double l,double w,double& max, double& maxside)
{double vol,ht;
maxside=min(l,w);
ht=.001;
max=-1;
while(maxside>ht*2)
{vol=(l-ht*2)*(w-ht*2)*ht;
if(vol>max)
{max=vol;
maxside=ht;
}
ht+=.001;
}
}
double min(double l,double w)
{if(l<w)
return l;
return w;
}
Note: Kindly find the output code below
/*
Output for the code:
Enter the area of the flat cardboard: 23
dimensions of card to maximize the cardboard box which has a volume 0.023
Length: 4.796
Width: 4.796
dimensions of the cardboard box
Length: 4.794
Width: 4.794
Height: 0.001
*/
What keyboard functions lets you delete words
Answer:Backspace
Explanation:
If you want to delete words you use the backspace button.
Answer:
Backspace
Explanation:
The code below uses the Space macro which simply displays the number of blank spaces specified by its argument. What is the first number printed to the screen after this code executes? (ignore the .0000 from Canvas) main PROC push 4 push 13 call rcrsn exit main ENDP rcrsn PROC push ebp mov ebp,esp mov eax,[ebp + 12] mov ebx,[ebp + 8] cmp eax,ebx jl recurse jmp quit recurse: inc eax push eax push ebx call rcrsn mov eax,[ebp + 12] call WriteDec Space 2 quit: pop ebp ret 8 rcrsn ENDP
Answer:
The code implements a recursive function by decrementing number by 1 from 10 to 4 recursively from the stack and add an extra space 2 using the macro function
Explanation:
Solution
The code implements a recursive function by decrementing number by 1 from 10 to 4 recursively from the stack and add an extra space 2 using the macro function mwritespace
The first number is printed after the code executes is 9
Code to be used:
Include Irvine32.inc
INCLUDE Macros.inc ;Include macros for space
.code
main proc
push 4 ;Push 4 to the stack
push 10 ;Push 10 to the stack
call rcrsn ;call the function
exit
;invoke ExitProcess,0 ;After return from the function
;call exit function
main ENDP ;end the main
rcrsn PROC ;define the function
push ebp ;push the ebp into stack
mov ebp,esp ;set ebp as frame pointer
mov eax,[ebp + 12] ;This is for second parameter
mov ebx,[ebp + 8] ;This is for first parameter
cmp eax,ebx ;compare the registers
jl recurse ;jump to another function
jmp quit ;call quit
recurse: ;Implement another function
inc eax ;increment count value
push eax ;push the eax value into stack
push ebx ;push ebx into stack
call rcrsn ;call above function
mov eax,[ebp + 12] ;This is for second parameter
call WriteDec ;write the value on the screen
mWritespace 2 ;Space macro print 2 spaces
;pause the screen
quit: ;Implement quit function
pop ebp ;pop the pointer value from the stack
ret 8 ;clean up the stack
rcrsn ENDP
end main
AYUDAAAA!!!!! URGENTE!!!!!!1
¿para que sirve la "BIG DATA"?
Answer:
Big data is a field that treats ways to analyze, systematically extract information from, or otherwise deal with data sets that are too large or complex to be dealt with by traditional data-processing application software. ... Big data was originally associated with three key concepts: volume, variety, and velocity.
SPANISH TRANSLATION
Big data es un campo que trata formas de analizar, extraer sistemáticamente información de, o de otra manera tratar con conjuntos de datos que son demasiado grandes o complejos para ser manejados por el software tradicional de aplicación de procesamiento de datos. ... Big data se asoció originalmente con tres conceptos clave: volumen, variedad y velocidad.
Explain why you cannot the Apple OS install on a regular windows computer and vice versa, without the aid of a virtualization software explain Virtualbox, parallel desktop, etc. In your response, explain why it works with a virtualization software.
Answer:
The reason is due to proprietary design of the Operating System (OS) which require a virtualization software to blanket or "disguise" the hardware (processor) borderlines of the computer onto which it is to be installed.
Explanation:
An Apple system that has the RISC processor and system architecture which has an operating system made entirely for the Apple system architecture
If the above Apple OS is to be installed on a windows computer, then the procedure to setup up the OS has to be the same as that used when on an Apple system, hence, due to the different processors and components of both systems, a virtualization will be be needed to be provided by a Virtual box, Parallels desktop or other virtualization software.
In devising a route to get water from a local lake to its central water storage tank, the city of Rocky Mount considered the various routes and capacities that might be taken between the lake and the storage tank. The city council members want to use a network model to determine if the city's pipe system has enough capacity to handle the demand.
1. They should use ____________.
A. Minimal Spanning Tree Method
B. Shortest Path Method
C. Maximal Flow Method
D. Any of the above will do
Answer:
C. Maximal Flow Method
Explanation:
When it comes to optimization theory, Maximal Flow Method or problems have to do with finding a possible or viable flow through a flow network that obtains the maximum potential flow rate. The maximum flow problem can be viewed as an exceptional case of more complex and complicated network flow problems, such as that of the circulation problem.
Let a and b be two vector. i.e. a and b are two vectors, of possibly different sizes, containing integers. Further assume that in both a and b the integers are sorted in ascending order.
1. Write a function:
vector merge( vector a, vector b)
that will merge the two vectors into one new one and return the merged vector.
By merge we mean that the resulting vector should have all the elements from a and b, and all its elements should be in ascending order.
For example:
a: 2,4,6,8
b: 1,3,7,10,13
the merge will be: 1,2,3,4,6,7,8,10,13
Do this in two ways. In way 1 you cannot use any sorting function. In way 2 you must.
Answer:
A C++ program was used in writing a function in merging ( vector a, vector b) or that will merge the two vectors into one new one and return the merged vector.
Explanation:
Solution
THE CODE:
#include <iostream>
#include <vector>
using namespace std;
vector<int> merge(vector<int> a, vector<int> b) {
vector<int> vec;
int i = 0, j = 0;
while(i < a.size() || j < b.size()) {
if(i >= a.size() || (j < b.size() && b[j] < a[i])) {
if(vec.empty() || vec[vec.size()-1] != b[j])
vec.push_back(b[j]);
j++;
} else {
if(vec.empty() || vec[vec.size()-1] != a[i])
vec.push_back(a[i]);
i++;
}
}
return vec;
}
int main() {
vector<int> v1 = {2, 4, 6, 8};
vector<int> v2 = {1, 3, 7, 10, 13};
vector<int> vec = merge(v1, v2);
for(int i = 0; i < vec.size(); ++i) {
cout << vec[i] << " ";
}
cout << endl;
return 0;
}