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- package nWeb4;
- import web4.Main;
- /**
- * Created by Артем on 15.09.2014.
- */
- public class Demo {
- public static void main(String[] args) {
- Matrix m1 = new Matrix();
- Matrix m2 = new Matrix();
- /*m1.generate(3);
- m1.print();
- System.out.println();
- m2.generate(3);
- m2.print();
- System.out.println();
- int[][] resultAdd = m1.add(m2.getMatrix());
- Matrix.print(resultAdd);
- System.out.println("~~~~~");*/
- m1.generateMulty(2);
- m1.print();
- System.out.println();
- m2.generateMulty(3);
- m2.print();
- System.out.println();
- int[][] resultMyltiply = m1.multiply(m2.getMatrix());
- Matrix.print(resultMyltiply);
- }
- }
- package nWeb4;
- /**
- * Created by Артем on 15.09.2014.
- */
- public class Matrix {
- private int[][] matrix;
- public void print() {
- print(matrix);
- }
- public static void print(int[][] array){
- for (int i = 0; i < array.length; i++) {
- for (int j = 0; j < array[i].length; j++) {
- System.out.print(array[i][j] + " ");
- }
- System.out.println();
- }
- }
- public void generate(int size) {
- matrix = new int[size][size];
- for (int i = 0; i < matrix.length; i++) {
- for (int j = 0; j < matrix[i].length; j++) {
- matrix[i][j] = (int) Math.round(Math.random() * 10);
- }
- }
- }
- public void generateMulty(int size) {
- matrix = new int[size-1][size];
- for (int i = 0; i < matrix.length; i++) {
- for (int j = 0; j < matrix[i].length; j++) {
- matrix[i][j] = (int) Math.round(Math.random() * 10);
- }
- }
- }
- public int[][] add(int[][] m){
- int[][] result = new int [matrix.length][matrix.length];
- for (int i = 0; i<matrix.length; i++){
- for (int j = 0; j < matrix[i].length; j++) {
- result[i][j] = matrix[i][j] + m[i][j];
- }
- }
- return result;
- }
- public int[][] multiply(int[][] m){
- int[][] result = new int[1][1];
- //на этот цикл не обращай внимание, потом приведу его в порядок, т.к. экспериментировал
- for (int i = 0; i < result.length; i++) {
- result[i] = new int[3];
- }
- for (int i = 0; i<matrix.length; i++) {
- for (int j = 0; j < matrix[i].length; j++) {
- for (int l = 0; l < m.length; l++) {
- result[i][j] += matrix[i][l] * m[l][j];
- }
- }
- }
- return result;
- }
- public int[][] getMatrix() {
- return matrix;
- }
- }
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