java二维数组行列互换

以下是在Java中实现二维数组行列互换的方法：

public class ArrayTranspose {
    public static void main(String[] args) {
        int[][] matrix = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};

        // 打印原始矩阵
        System.out.println("原始矩阵：");
        printMatrix(matrix);

        // 行列互换
        int[][] transposedMatrix = transpose(matrix);

        // 打印互换后的矩阵
        System.out.println("行列互换后的矩阵：");
        printMatrix(transposedMatrix);
    }

    // 行列互换方法
    public static int[][] transpose(int[][] matrix) {
        int rows = matrix.length;
        int cols = matrix[0].length;

        int[][] transposedMatrix = new int[cols][rows];

        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < cols; j++) {
                transposedMatrix[j][i] = matrix[i][j];
            }
        }

        return transposedMatrix;
    }

    // 打印矩阵方法
    public static void printMatrix(int[][] matrix) {
        for (int[] row : matrix) {
            for (int num : row) {
                System.out.print(num + " ");            }
            System.out.println();
        }
    }
}

运行以上代码，将会输出原始矩阵和行列互换后的矩阵。