为什么矩阵乘法器不起作用？

Question

public static double[][] multiplyMatrix(double[][] matrix1, double[][] matrix2) {
        // As both arrays are square and the same size, the row size represents the row size and column size for both matrices
        int dimension = matrix1.length;

        double[][] matrix3 = new double[dimension][dimension];

        for (int i = 0; i < dimension-1; i++) {
            for (int j = 0; j < dimension-1; j++) {
                for (int k = 0; k < dimension-1; j++) {
                    matrix3[i][j] += matrix1[i][k] * matrix2[k][j];
                }
            }
        }

        return matrix3;
    }

这非常令人沮丧.

Answer 1

看起来k总是等于零.你在两个循环中递增j.

Answer 2

你的for循环需要再进行一次迭代.

for (int i = 0; i < dimension-1; i++)

应该

for (int i = 0; i < dimension; i++)

还要以相同的方式更新j和k循环(并且k循环增量j,这看起来像复制/粘贴错误).