趣味学术Award- winning question (No.:1)

欢迎大家参与“趣味学术”第一期的活动，完成以下题目，就有机会或得由协和高中送出的精美礼品一份！共2个名额，以回复正确答案时间为准哦！

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题目：

请问有多少种方式可以在一个红色，蓝色，绿色和黄色的挂钩上分别挂上一顶红色，蓝色，绿色和黄色的帽子，并且要求挂钩和颜色和帽子的颜色是不一样的？

Welcome to our 1st award- winning question,join us then you will have a chance to get the prize from SUIS Gubei.Only have 2 chance,first reply correct answer first serve.

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How many different ways can a red hat, a blue hat, a green hat and a yellow hat be arranged on a red peg, a blue peg, a green peg and a yellow peg，so that no hat is on the same colour peg?