int arr[][] = {{4,6},{1,4,5,7},{-2}};遍历该二维数组,并得到和
1 public class shuzu10{ 2 //编写一个main方法 3 public static void main(String[] args){ 4 /* 5 int arr[][] = {{4,6},{1,4,5,7},{-2}};遍历该二维数组,并得到和 6 7 8 思路 9 1.遍历二维数组,并将各个值累积到 int sum 10 */ 11 int arr[][] = {{4,6},{1,4,5,7},{-2}}; 12 int sum = 0; 13 for(int i = 0;i < arr.length;i++){ 14 //遍历每一个数组 15 for(int j = 0;j < arr[i].length;j++){ 16 sum += arr[i][j]; 17 } 18 } 19 System.out.println("sum=" + sum); 20 21 22 23 24 25 } 26 }