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1 2 3 4 | require 'set'p (123..329).map { |i| [i, i<<1, i*3] if Set.new("#{i}#{i<<1}#{i*3}".gsub("0",'').bytes).size == 9}.compact!#输出 [[192, 384, 576], [219, 438, 657], [273, 546, 819], [327, 654, 981]] |