Created
December 11, 2012 12:31
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rupy source example
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| require 'benchmark' | |
| REP = 10 | |
| puts 'Generating data...' | |
| class Array | |
| def qsort | |
| return self if length <= 1 | |
| pivot = self[0] | |
| less, greatereq = self[1..-1].partition { |x| x < pivot } | |
| less.qsort +[pivot] + greatereq.qsort | |
| data = [10, 17].map do |i| | |
| (1 << i).times.map { rand 1000000 } | |
| puts 'done' | |
| def n_min(l,n) (1..n).map {a=l.min ; l=l-[a]; a } end | |
| Benchmark.bm 30 do |x| | |
| [4, 20, 100].each do |n| | |
| data.each do |array| | |
| x.report "\n#{n}/#{array.size} items sort" | |
| REP.times do | |
| array.qsort[0, n] | |
| x.report "#{n}/#{array.size} items n_min" | |
| REP.times | |
| n_min array, n |
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