Question

draw a flew chart for this code

// written by Alfuzan Mohammed
package matreix;
import java.util.Scanner;

public class Matrix {

   public static void main(String[] args) {
       Scanner scanner = new Scanner(System.in);
   System.out.print("Enter number of rows: first matrix ");
   int rows = scanner.nextInt();
   System.out.print("Enter number of columns first matrix: ");
   int columns = scanner.nextInt();
   System.out.print("Enter number of rows: seconed matrix ");
   int rowss = scanner.nextInt();
   System.out.print("Enter number of columns seconed matrix: ");
   int columnss = scanner.nextInt();
   System.out.println();
   if(rowss!=rows || columnss!=columns)
          {
              System.out.println("Cannot subtract these! Dimension mismatch");
              System.exit(0); }
   if(rows < 0 || columns < 0)
          {
              System.out.println("Invalid rows or columns");
              System.exit(0); }
   System.out.println("Enter first matrix");
   int[][] a = readMatrix(rows, columns);
   System.out.println();
   if(rows < 0 || columns < 0)
          {
              System.out.println("Invalid rows or columns");
              System.exit(0); }
   System.out.println("Enter second matrix");
   int[][] b = readMatrix(rowss, columnss);
   int[][] difference = subtract(a, b);
   System.out.println("A - B =");
   printMatrix(difference);
   System.out.println();
  
  
     
     
   }
   public static int[][] readMatrix(int rows, int columns) {
   int[][] result = new int[rows][columns];
   Scanner s = new Scanner(System.in);
   for (int i = 0; i < rows; i++) {
   for (int j = 0; j < columns; j++) {
   result[i][j] = s.nextInt();
   }
   }
   return result;
   }
     
     
     
     
   public static int[][] subtract(int[][] a, int[][] b) {
   int rows = a.length;
   int columns = a[0].length;
   int[][] result = new int[rows][columns];
   for (int i = 0; i < rows; i++) {
   for (int j = 0; j < columns; j++) {
   result[i][j] = a[i][j] - b[i][j];
   }
   }
   return result;
   }

   public static void printMatrix(int[][] matrix) {
   int rows = matrix.length;
   int columns = matrix[0].length;
   for (int i = 0; i < rows; i++) {
   for (int j = 0; j < columns; j++) {
   System.out.print(matrix[i][j] + " ");
   }
   System.out.println();}
   }
   }
     
  

Answer 1

Flowchart for the program of Matrix subtraction: