I'm currently trying to add a Matrix with an Array.
This is the code I have right now:
public void add(Matrix m) {
for(int i = 0; i == values.length; i++) {
for(int j = 0; j == values.length; j++) {
m.values[i][j] = m.values[i][j] + values[i][j];
}
}
}
I would appreciate any help I can get, thanks!
In Java language there are no word of matrix or 2D or nD array there are an array of array.
About your problem try this :
for (int i = 0; i < values.length; i++) {
for (int j = 0; j < values[i].length; j++) {
for (int i = 0; i < values.length; i++) { return
array by array { 2, 4, 5 } and { 3, 7, 2 } and { -2, 0, 1 } and { 5, 1, 1 }for (int j = 0; j < values[i].length; j++) { return
value by values of each array from the first loop if we took the first array it will return 2 and 4 and 5
int[] array = values[i]; for (int j = 0; j < array.length; j++) { that's it you get it ;)values and what is mCheck for the dimensions of the Array and the Matrix to be the same.
public void add(Matrix m) {
for(int i = 0; i < values.length; i++) {
for(int j = 0; j < values[i].length; j++) {
m.values[i][j] = m.values[i][j] + values[i][j];
}
}
}
If you want to add matrices, you can use loops in Java, but also streams. This is a sample implementation of matrix addition using streams:
public class MatrixOperations {
public static double[][] add(double[][] a, double[][] b) {
return range(0, a.length).boxed().collect(
() -> new double[a.length][a[0].length], // create the accumulator matrix which is to be returned
(acc, row) -> range(0, a[row].length).forEach(col -> acc[row][col] = a[row][col] + b[row][col]), // sum each value
(acc, r) -> {}); // ignore
}
// Test method
public static void main(String[] args) {
double[][] a = {{1.0, 3.0}, {1.0, 0.0}, {1.0, 2.0}};
double[][] b = {{.0, .0}, {7.0, 5.0}, {2.0, 1.0}};
double[][] sum = add(a, b);
Stream.of(sum).map(Arrays::toString).forEach(System.out::println);
}
}
If you run this class you will get the following output:
[1.0, 3.0]
[8.0, 5.0]
[3.0, 3.0]
i == values.length->i < values.length. same forjm.valuesandvalueshave the same dimensions? Do the number of rows equal the number of columns? You are assuming these things.for (int i = 0; i < values.length; i++) { for (int j = 0; j < values[i].length; j++) {