题解 | #魔法数字变换#
魔法数字变换
http://www.nowcoder.com/practice/db41a6ce80a646aa9a5eb6252ac2df76
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int n = in.nextInt();
int i = 0;
while(n != 1){
if(n%2 == 0){
n = n/2;
}else if(n%2 == 1){
n = n*3 +1;
}
i++;
}
System.out.println(i);
}
}
）。