13 lines
315 B
Ruby
13 lines
315 B
Ruby
DIGITS = (0..9).to_a
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range = (3..18)
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res = range.map do |s|
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powers = {}
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DIGITS.each{|n| powers[n] = n**s}
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DIGITS.repeated_combination(s).filter_map do |combi|
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sum = powers.values_at(*combi).sum
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sum if sum.digits.sort == combi.sort
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end.sort
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end
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puts "Own digits power sums for N = #{range}:", res
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