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require 'benchmark'
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Benchmark.bm do |x|
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[10_000,1_000_000,100_000_000].each do |n|
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ary = Array.new(n,0)
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GC.start
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x.report("#{n}:shift"){ ary.shift }
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(0..4).each do |i|
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ary = Array.new(n,0)
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GC.start
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x.report("#{n}:shift(#{i})"){ ary.shift(i) }
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end
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end
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end
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