编写一个程序,打印输出二维数组arr[ ][ ]={{4,7,2,9},{...答:public static void main(String[] args) { int [][] arr={{4,7,2,9},{8,5,1,0},{1,8,2,6},{6,5,4,2}};for (int i = 0; i < arr.length; i++) { System.out.print(getMax(arr[i])+" ---" +getMin(arr[i]));System.out.println();} } / 求数组中最大...