题解 | #二维数组求和#

//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[][] arr) {//取有多少行
        int sum=0;

        //write your code here......
        for(int i = 0; i < arr.length; i++){
            for(int j = 0; j < arr[i].length; j++){//取每一行有多少列
                sum += arr[i][j];
            }
        }

        return sum;
    }
}