public class uuuuuu {
    public static void main(String[] args) {
        //创建二维数组
        int arr[][]=new int[][]{{123},{456},{789}};
        System.out.println("行列互调前:");
        //输出二维数组
        
        printArray(arr);
        int arr2[][]=new int[arr.length][arr.length];
        for(int i=0;i<arr.length;i++){
            for(int j=0;j<arr[i].length;j++){
                arr2[i][j]=arr[j][i];
            }
        }
        System.out.println("行列互调后:");
        //输出行列互调后的二维数组
        printArray(arr2);
    }


    private static void printArray(int[][] arr){
        for(int i=0;i<arr.length;i++){
            for(int j=0;j<arr.length;j++){
                System.out.print(arr[i][j]+"");
               
            }
            System.out.println();
        }
    }
}