java矩阵相乘教程



public class MultiplyMatrices {     public static void main(String[] args) {         int r1 = 2, c1 = 3;         int r2 = 3, c2 = 2;         int[][] firstMatrix = { {3, -2, 5}, {3, 0, 4} };         int[][] secondMatrix = { {2, 3}, {-9, 0}, {0, 4} };         // 两个矩阵相乘         int[][] product = new int[r1][c2];         for(int i = 0; i < r1; i++) {             for (int j = 0; j < c2; j++) {                 for (int k = 0; k < c1; k++) {                     product[i][j] += firstMatrix[i][k] * secondMatrix[k][j];                 }             }         }         //显示结果         System.out.println("两个矩阵的总和为: ");         for(int[] row : product) {             for (int column : row) {                 System.out.print(column + "    ");             }             System.out.println();         }     } }

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