#Z0210. 求n的阶
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ID: 884
Type: Default
1000ms
256MiB
Tried: 20
Accepted: 11
Difficulty: 6
Uploaded By:
jack
Tags> 求n的阶
输出一个数n，求n的阶。
请使用递归完成。
5! = 5*4*3*2*1 = 120
样例输入1
5
样例输出1
120
样例输入2
6
样例输出2
720
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