15 lines
374 B
Text
15 lines
374 B
Text
defmodule Taxicab do
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def numbers(n \\ 1200) do
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(for i <- 1..n, j <- i..n, do: {i,j})
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|> Enum.group_by(fn {i,j} -> i*i*i + j*j*j end)
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|> Enum.filter(fn {_,v} -> length(v)>1 end)
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|> Enum.sort
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end
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end
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nums = Taxicab.numbers |> Enum.with_index
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Enum.each(nums, fn {x,i} ->
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if i in 0..24 or i in 1999..2005 do
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IO.puts "#{i+1} : #{inspect x}"
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end
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end)
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