// 用二维数组表示的学生成绩: int[][] scores = { { 82, 90, 91 }, { 68, 72, 64 }, { 95, 91, 89 }, { 67, 52, 60 }, { 79, 81, 85 }, }; // TODO: double average = 0; double total = 0.00; int count = 0; for (int[] arr : scores) { for (int n : arr) { total +=n; count +=1; } } average = total/count; System.out.println(average);
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省体育馆到了