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USPshnik [31]
3 years ago
9

ISBN-13 is a new standard for identifying books. It uses 13 digits d1d2d3d4d5d6d7d8d9d10d11d12d13. The last digit d13 is a check

sum, which is calculated from the other digits using the following formula: 10 - (d1 3d2 d3 3d4 d5 3d6 d7 3d8 d9 3d10 d11 3d12) % 10 If the checksum is 10, replace it with 0. Your program should read the input as a string.

Computers and Technology
1 answer:
qwelly [4]3 years ago
5 0

Answer:

// Scanner class is imported to allow program

// read input from user

import java.util.Scanner;

// Solution class is created

public class Solution {

// main method that begin program execution

public static void main(String[] strings) {

// Scanner object scan is created

// it receive input via the keyboard

Scanner scan = new Scanner(System.in);

// a prompt is displayed for user to enter 12 digits of ISBN

System.out.print("Enter the first 12 digits of an ISBN as string: ");

// user input is assigned to input

String input = scan.next();

//if length of input is not 12, program display error message and quit

if (input.length() != 12) {

System.out.println(input + " is Invalid input");

System.exit(0);

}

// 0 is assigned to checkSum

int checkSum = 0;

// for loop that goes through the string and does the computation

for (int i = 0; i < input.length(); i++) {

// if the index is even

if ((i + 1) % 2 == 0) {

checkSum += (input.charAt(i) - '0') * 3;

}

// if the index is odd

else

{

checkSum += input.charAt(i) - '0';

}

}

// modulo 10 of checkSum is assigned to checkSum

checkSum %= 10;

// checkSum is substracted from 10

checkSum = 10 - checkSum;

// if checkSum equals 10, 0 is concatenated with input

// else input is concatenated with checkSum

if (checkSum == 10) input += "0";

else input += checkSum;

// the new value of the isbn-13 is displayed

System.out.println("The ISBN-13 number is " + input);

}

}

Explanation:

The program is written in Java and well commented.

A sample of program output during execution is also attached.

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True or false? a router is a network device that directs packets over a network towards their final destination.
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A router is a web device that directs packages over a web towards their final destination is true.

<h3>What is the router?</h3>
  • A router is a machine that combines two or more packet-switched grids or subnetworks.
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  • However, routers can integrate the functions of these components, and secure with these devices, to improve Internet entry or help create interaction networks.
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1. What does the word “processing” in data pro- cessing mean?
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Word processing is the process of creating and editing documents on a computer. It allows a user to create documents that mimic the format and style of a typical typewriter. It requires a computer and word processing software. A printer may also be used to create a physical copy of the document.

Explanation:

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What is 4365 −3412 when these values represent
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The result of the subtraction of 4365 and 3412 using octal numbers is of:

753.

<h3>What are octal numbers?</h3>

For octal numbers, each number is represented by three bits, as follows:

  • 0 = 000.
  • 1 = 001.
  • 2 = 010.
  • 3 = 011.
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  • 5 = 101.
  • 6 = 110.
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Then the binary representation of number 4365 is given as follows:

100011110101

The binary representation of number 3412 is given as follows:

011100001010

Then the following binary subtraction is made:

100011110101 - 011100001010

The result of this subtraction is of:

100011110101 - 011100001010 = 111101011

Then the octal result is given as follows:

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"So far this month you have achieved $100.00 in sales, which is 50% of your total monthly goal. With only 5 more workdays this m
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Answer:

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