prelude: | ary2 = 2.times.map(&:to_s).shuffle ary10 = 10.times.map(&:to_s).shuffle ary100 = 100.times.map(&:to_s).shuffle ary500 = 500.times.map(&:to_s).shuffle ary1000 = 1000.times.map(&:to_s).shuffle ary2000 = 2500.times.map(&:to_s).shuffle ary3000 = 2500.times.map(&:to_s).shuffle ary5000 = 5000.times.map(&:to_s).shuffle ary10000 = 10000.times.map(&:to_s).shuffle ary20000 = 20000.times.map(&:to_s).shuffle ary50000 = 50000.times.map(&:to_s).shuffle ary100000 = 100000.times.map(&:to_s).shuffle benchmark: ary2.max: ary2.max ary10.max: ary10.max ary100.max: ary100.max ary500.max: ary500.max ary1000.max: ary1000.max ary2000.max: ary2000.max ary3000.max: ary3000.max ary5000.max: ary5000.max ary10000.max: ary10000.max ary20000.max: ary20000.max ary50000.max: ary50000.max ary100000.max: ary100000.max loop_count: 10000