import java.util.Random; import java.util.ArrayList; public class Program { /* The task is to have multiple Matrices, and each should have a different set of values of 1s ans 0s. The first matrix is completely empty. Then add all of the Matrices into the first Matrix. If a cell is not 0, add that value to the "Root Matrix" (First Matrix) */ static ArrayList matrices = new ArrayList(); public static void main(String[] args) { Matrix matrix1 = new Matrix (6, 3); print("Matrix 1:"); printMatrix(matrix1); populateRandomMatrices(5, 6, 3); addAllMatrixesToRoot(matrix1); print("\nMatrix Total:"); printMatrix(matrix1); } private static void populateRandomMatrices(int count, int row, int col) { for (int i = 2; i <= count + 1; i++) { Matrix m = new Matrix(row, col); m.randomPopulate(); print("\nMatrix " + i + " :"); printMatrix(m); matrices.add(m); } } private static void addAllMatrixesToRoot(Matrix rootMatrix) { for (int i = 0; i < matrices.size(); i++) { rootMatrix.add(matrices.get(i)); } } public static void print(String text) { System.out.println(text); } public static void printMatrix(Matrix m) { System.out.println(m.getStringData()); } } class Matrix { private int row; private int col; private int[][] matrix; public Matrix(int row, int col) { this.row = row; this.col = col; createMatrix(); resetMatrix(); } private void createMatrix() { matrix = new int[row][col]; } public void resetMatrix() { for (int i = 0; i < row; i++) { for (int j = 0; j < col; j++) { matrix[i][j] = 0; } } } public void add(Matrix m) { if (m.getColumns() != col || m.getRows() != row) return; for (int i = 0; i < row; i++) { for (int j = 0; j < col; j++) { if (m.getData()[i][j] == 1) matrix[i][j]++; } } } public void randomPopulate() { for (int i = 0; i < row; i++) { for (int j = 0; j < col; j++) { int rand = (new Random()).nextInt() % 2 ; matrix[i][j] = rand < 0 ? rand * -1 : rand; } } } public int[][] getData() { return matrix; } public String getStringData() { String output = ""; for (int i = 0; i < row; i++) { for (int j = 0; j < col; j++) { output += Integer.toString(matrix[i][j]) + " "; } output += "\n"; } return output; } public int getColumns() { return col; } public int getRows() { return row; } }

Matrix Additions