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Commit 069385fc authored 11 months ago by BellCodeEditor's avatar BellCodeEditor
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parent 40eb12f4
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  • diy1.py
diy1.py
View file @ 069385fc
#定义一个函数sum_numbers() #定义一个函数sum_numbers()
#要求这个函数能接收一个名为num的整型参数 #要求这个函数能接收一个名为num的整型参数
#要求这个函数能计算1+2+3+……+num的结果 #要求这个函数能计算1*2*3*……*num的结果
# 这种类型叫做阶乘 5的阶乘等于
# s(5) = 5*4*3*2*1
# s(n) = n * s(n - 1) s(5) = 5 * s(4)
# s(n) = n * s(n - 1) s(4) = 4 * s(3)
# s(n) = n * s(n - 1) s(3) = 3 * s(2)
# s(n) = n * s(n - 1) s(2) = 2 * s(1)
# s(1) = 1
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