Category: matrix

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multiply two matrix using java with example

multiply two matrix using java with example

In this post, we will learn about multiply two matrix in java with example

We are declaring two matrix named as a,b and one more variable mul to store the multiplication of a&b matrix

Example
public class MatrixMultiplication {

	public static void main(String[] args) {
		try {

			int a[][] = { { 50, 60 }, { 20, 15 } };
			int b[][] = { { 25, 20 }, { 10, 5 } };

			// Declaring the diff matrix
			int[][] mul = new int[a.length][b.length];

			// multiply 2 matrices
			for (int i = 0; i < a.length; i++) {
				for (int j = 0; j < b.length; j++) {
					mul[i][j] = 0;
					for (int k = 0; k < 2; k++) {
						mul[i][j] += a[i][k] * b[k][j];
					}
					System.out.print(mul[i][j] + " ");
				}
				System.out.println();
			}

		} catch (Exception e) {
			e.printStackTrace();
		}
	}

}
Output
1850  1300 
650   475
Github

https://github.com/rkumar9090/BeginnersBug/blob/master/BegineersBug/src/com/geeks/example/MatrixMultiplication.java

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subtracting two matrix in java with example

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Interview java matrix

subtracting two matrix in java with example

subtracting two matrix in java with example

In this post, we will learn about subtracting two matrix in java with example

We are declaring two matrix named as a,b and one more variable diff to store the subtraction of a&b matrix

Example
public class SubtractingMatrix {

	public static void main(String[] args) {
		try {

			int a[][] = { { 50, 60 }, { 20, 15 } };
			int b[][] = { { 25, 20 }, { 10, 5 } };

			// Declaring the diff matrix
			int[][] diff = new int[a.length][b.length];

			// Subtracting two matrix
			for (int i = 0; i < a.length; i++) {

				for (int j = 0; j < b.length; j++) {
					diff[i][j] = a[i][j] - b[i][j];
				}
			}

			// Printing the diff matrix
			for (int i = 0; i < diff.length; i++) {
				for (int j = 0; j < diff[i].length; j++) {
					System.out.print(diff[i][j] + " ");
				}
				System.out.println();
			}

		} catch (Exception e) {
			e.printStackTrace();
		}

	}
}
Output
25 40 
10 10
Github

https://github.com/rkumar9090/BeginnersBug/blob/master/BegineersBug/src/com/geeks/example/SubtractingMatrix.java

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adding two matrix in java with example

Categories
Interview java matrix

adding two matrix in java with example

adding two matrix in java with example

In this post, we will learn about adding two matrix in java with example

In below example,We are using two dimensional array for this operations.

Here we are declaring two matrix named as a,b and one more variable sum to store the addition of a&b matrix

The first for loop is used to add two matrix and the second for loop used to print the addition value

Example
public class AddingMatrix {

	public static void main(String[] args) {
		try {

			int a[][] = { { 54, 67 }, { 45, 56 } };
			int b[][] = { { 25, 56 }, { 85, 96 } };

			// Declaring the sum matrix
			int[][] sum = new int[a.length][b.length];

			// Adding two matrix
			for (int i = 0; i < a.length; i++) {

				for (int j = 0; j < b.length; j++) {
					sum[i][j] = a[i][j] + b[i][j];
				}
			}

			// Printing the sum matrix
			for (int i = 0; i < sum.length; i++) {
				for (int j = 0; j < sum[i].length; j++) {
					System.out.print(sum[i][j] + " ");
				}
				System.out.println();
			}

		} catch (Exception e) {
			e.printStackTrace();
		}

	}

}
Output
79 123 
130 152
Github

https://github.com/rkumar9090/BeginnersBug/blob/master/BegineersBug/src/com/geeks/example/AddingMatrix.java

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create 2×2 matrix using java

Categories
java matrix

create 2×2 matrix using java

create 2x2 matrix using java

In this post, we will learn to create 2×2 matrix using java

We all know that In mathematics Matrix is a two dimensional array with rows and column as like above image. Here we are going to create that matrix using java

Java have a feature to create two dimensional array as like below

Two dimensional array Syntax
			int a[][] = { { 1, 2 }, { 2, 4 } };

The above array will convert as like below image

Example
public class CreateMatrixExample {
	public static void main(String[] args) {
		try {

			// Creating 2x2 matrix
			int a[][] = { { 1, 2 }, { 2, 4 } };

			// printing above 2d array in matrix format
			for (int i = 0; i < a.length; i++) {
				for (int j = 0; j < a[i].length; j++) {
					System.out.print(a[i][j] + " ");
				}
				System.out.println();
			}

		} catch (Exception e) {
			e.printStackTrace();
		}
	}

}
Output
1 2 
2 4
Github

https://github.com/rkumar9090/BeginnersBug/blob/master/BegineersBug/src/com/geeks/example/CreateMatrixExample.java