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[][] arr) { int sum=0; //write your code here...... // for(int i = 0 ; i<arr.length; i++) // { // for(int j = 0; j<arr[i].length; j++) // { // sum += arr[i][j]; // } // } for(int[] arr1 : arr){ for(int arr2 : arr1){ sum = sum + arr2; } } return sum; } }
学习一下增强for循环