题解 | 魔法数字变换

#include <stdio.h>

int main() {
	int n = 0;
	int count = 0;
	scanf("%d", &n);
	while (1) {
		if (n % 2 == 0) {
			n = n / 2;
		}
		else{
			n = 3 * n + 1;
		}
		count++;
		if (n == 1) {
			break;
		}
	}
	printf("%d", count);
	return 0;
}