8 lines
192 B
Text
8 lines
192 B
Text
def factorial( n )
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| n >= 0 =
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def
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fact( acc, 0 ) = acc
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fact( acc, n ) = fact( acc*n, n - 1 )
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fact( 1, n )
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| otherwise = error( 'factorial: n should be non-negative' )
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