从键盘输入20个数,存入一维数组中,求最小值及最小值所有下标。 Scanner sc=new Scanner(System.in);____; for (int i = 0; ____; i++) {System.out.println("请输入第" + (i+1) + "个数:"); num[i] = Integer.parseInt(sc.nextLine()); } int min = num[0]; int index = 0; for (int i = 1; ____; i++){ if (num[i]