mirror of
https://github.com/TheAlgorithms/Ruby
synced 2024-12-27 21:58:57 +01:00
26 lines
397 B
Ruby
26 lines
397 B
Ruby
def binary_count_setbits(x)
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raise 'Input must be a positive integer' if x < 0
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binary = x.to_s(2)
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binary.chars.map { |c| c.to_i }.reduce(:+)
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end
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begin
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binary_count_setbits(-1)
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rescue => e
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puts e.message
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end
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# Input must be a positive integer
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puts binary_count_setbits(0)
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# 0
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puts binary_count_setbits(1)
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# 1
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puts binary_count_setbits(1024)
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# 1
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puts binary_count_setbits(1023)
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# 10
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