//接触JAVA后第一次碰到二维数组,还是挺有意思的,学到了那么一丢丢操作诶~~~ public class Main { public static void main(String[] args) { int[][] arr = {{11,33,55},{22,44,66,88},{131,214,315,146},{928,827,726,625},{424,525}}; int sum=add(arr); System.out.println(sum); } public static int add(int[...