multiplication of a matrix in java code example
Example 1: matrix multiplication in java
public class MatrixMultiplicationExample{
public static void main(String args[]){
int a[][]={{1,1,1},{2,2,2},{3,3,3}};
int b[][]={{1,1,1},{2,2,2},{3,3,3}};
int c[][]=new int[3][3];
for(int i=0;i<3;i++){
for(int j=0;j<3;j++){
c[i][j]=0;
for(int k=0;k<3;k++)
{
c[i][j]+=a[i][k]*b[k][j];
}
System.out.print(c[i][j]+" ");
}
System.out.println();
}
}}
Example 2: Matrix multiplication in java using function
public class MatrixMultiplicationJavaDemo
{
public static int[][] multiplyMatrix(int[][] matrix1, int[][] matrix2, int row, int column, int col)
{
int[][] multiply = new int[row][col];
for(int a = 0; a < row; a++)
{
for(int b = 0; b < col; b++)
{
for(int k = 0; k < column; k++)
{
multiply[a][b] += matrix1[a][k] * matrix2[k][b];
}
}
}
return multiply;
}
public static void printMatrix(int[][] multiply)
{
System.out.println("Multiplication of two matrices: ");
for(int[] row : multiply)
{
for(int column : row)
{
System.out.print(column + " ");
}
System.out.println();
}
}
public static void main(String[] args)
{
int row = 2, col = 3;
int column = 2;
int[][] matrixOne = {{1, 2, 3}, {4, 5, 6}};
int[][] matrixTwo = {{7, 8}, {9, 1}, {2, 3}};
int[][] product = multiplyMatrix(matrixOne, matrixTwo, row, col, column);
printMatrix(product);
}
}