//方法一
import java.util.Scanner;
public class loopTest1 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("输入整数:");
int input = sc.nextInt();
for (int i = input; i >= 1; i--) {
if (i * i > input) {
continue;
}
System.out.println(i);
if (i * i <= input) {
break;
}
}
}
}
//方法二
import java.util.Scanner;
public class loopTest2 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("输入整数:");
int input = sc.nextInt();
for (int i = 1; i <= input; i++) {
if (i * i == input) {
System.out.println(i);
break;
} else if (i * i > input) {
System.out.println(i - 1);
break;
}
}
}
}