Java程序无需使用数组即可找到n个数字中最大和最小的数字

public static void main(String[] args) {    int smallest = 0;    int large = 0;    int num;    System.out.println("enter the number");//how many number you want to enter    Scanner input = new Scanner(System.in);    int n = input.nextInt();    num = input.nextInt();    smallest = num; //assume first entered number as small one    // i starts from 2 because we already took one num value    for (int i = 2; i < n; i++) {        num = input.nextInt();        //comparing each time entered number with large one        if (num > large) { large = num;        }        //comparing each time entered number with smallest one        if (num < smallest) { smallest = num;        }    }    System.out.println("the largest is:" + large);    System.out.println("Smallest no is : " + smallest);}