系统会随机产生1个各位互相不相同的4位数,然后你有 10 次机会去猜， 每一次猜测后系统会自动的给出提示----离答案的差距. -Will be randomly generated each one that is not the same 4-digit, and then you have the opportunity to em guessing 10 times, each time the system will automatically guess the answer from the given prompt---- gap.