用java二维数组计算矩阵【1 2 3】
时间: 2023-05-30 09:04:59 浏览: 63
【4 5 6】与【7 8 9】的乘积
代码如下:
```
public class MatrixMultiplication {
public static void main(String[] args) {
int[][] matrix1 = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
int[][] matrix2 = {{1, 0, 0}, {0, 1, 0}, {0, 0, 1}};
int[][] result = new int[3][3];
// 矩阵乘法
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
for (int k = 0; k < 3; k++) {
result[i][j] += matrix1[i][k] * matrix2[k][j];
}
}
}
// 输出结果
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
System.out.print(result[i][j] + " ");
}
System.out.println();
}
}
}
```
输出结果为:
```
1 2 3
4 5 6
7 8 9
```