Select Code to Download

use List::Util qw( shuffle );

...
for_25     128/s      56%     39%     28%     25%    18%     9%      8
+%     --   -9%   -11%
for_0      140/s      71%     52%     40%     37%    29%    20%     19
+%    10%    --    -3%
grep_0     144/s      76%     56%     44%     41%    33%    23%     22
+%    13%    3%     --