二维数组的元素计数

Question

我试图计算2D数组的每个元素，但出于某种原因，我做错了：

    int[][] array = {{2, 3, 2}, {2, 2}};
    int counter = 0;
    for (int i = 0; i < array.length; i++) {
        int k = 0;
        for (k = 0; k < array.length; k++) {
            counter++;
        }
    }
    System.out.println(counter);

Answer 1

您的内循环应该通过array[i]访问每个数组元素的元素来计数它们：

int[][] array = {{2, 3, 2}, {2, 2}};
int counter = 0;
for (int i = 0; i < array.length; i++) {
    for (int k = 0; k < array[i].length; k++) {
        counter++;
    }
}