Question

20 people line up to board an airplane. Each has a boarding pass with assigned seat. However, the first person to board has lost his boarding pass and takes a random seat. After that, each person takes the assigned seat if it is unoccupied, and one of unoccupied seats at random otherwise. Write an efficient MPI program with 2 distributed nodes to calculate the percentage of people who occupied their assigned seats and percentage of people who occupied seats randomly.( Pease type the code and send me) it's from parallel distributing computing subject(MPI program)

Answer 1

import java.util.Scanner;

public class AirplaneSeating {

static int filled = 0;

public static void main(String[] args) {
// two- dimensional array with 7 rows and 4 columns
char[][] seats = new char[7][4];
for (int i = 0; i < 7; i++) {
seats[i][0] = 'A';
seats[i][1] = 'B';
seats[i][2] = 'C';
seats[i][3] = 'D';
}

String seatNumber = " ";
String q = " ";
System.out.println("Welcome to the Airplane Seating Reservation System.");
System.out.println("Please enter the seat (e.g.- 1A) you wish to reserve.");
System.out.println("Enter q to exit.");
Scanner keyboard = new Scanner(System.in);
seatNumber = keyboard.nextLine();
if (seatNumber.equals("q")) {
System.out.println("Program ended.");
System.exit(0);
}
// print seating pattern and put an X in the seatNumber location
while (filled < 28 && seatNumber.length() > 0) {
int row = seatNumber.charAt(0) - '1';
int col = seatNumber.charAt(1) - 'A';
if (row < 0 || row > 7 || col < 0 || col > 4) {
System.out.println("Input error. Enter seat to assign (e.g., '1A')," + "or q to quit.");
seatNumber = keyboard.nextLine();
if (seatNumber.equals("q")) {
System.out.println("Program ended.");
System.exit(0);
}
} else {
if (seats[row][col] != 'X') {
seats[row][col] = 'X';
filled++;
System.out.println(" ");
printSeats(seats);
}
if (filled < 28) {
System.out.println("Enter seat to assign (e.g., '1A')," + "or q to quit.");
seatNumber = keyboard.nextLine();
if (seatNumber.equals("q")) {
System.out.println("Program ended.");
System.exit(0);
}
}
}
}
}

private static void printSeats(char[][] seats) {
System.out.println("Row");
for (int i = 0; i < seats.length; i++) {
System.out
.println((i + 1) + " " + seats[i][0] + " " + seats[i][1] + " " + seats[i][2] + " " + seats[i][3]);

}
int numberOfSeatsAvailable = (28 - filled);
System.out.println("There are " + numberOfSeatsAvailable + " seats available.");
} // end main
} // end class