I've added small, but useful function to the
https://github.com/lion137/Competitive-Helper . It computes, within the range, any, well, lots of number series, like a Harmonic series or so. Works only on floats, but this is just a helper, basically to sanity check the work. Usage in the readme. A small example, also, here:
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| def factorial(n):
if n == 0: return 1
s = 1
while n > 0:
s *= n
n -= 1
return s
print(reduce_series(add, lambda n: n / (factorial(n)), 0, 7))
|
Supplying
add as an operator and n / n! function from 0 to, let's say, seven, we have a Euler number.
Enjoy!
