阶乘计算器
n! = 1×2×3×...×n
变量说明
n= non-negative integern!= factorial of n
Definition
Product of all positive integers from 1 to n.
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Base case
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Recursive definition
Each factorial is n times the previous.
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Stirling's approximation
Accurate estimate for large n.
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n= non-negative integer
n!= factorial of n
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