6 lines
241 B
Ruby
6 lines
241 B
Ruby
def sum lo, hi, &term
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(lo..hi).sum(&term)
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end
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p sum(1,100){|i| 1.0/i} # => 5.187377517639621
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# or using Rational:
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p sum(1,100){|i| Rational(1,i)} # => 14466636279520351160221518043104131447711 / 2788815009188499086581352357412492142272
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