Array is faster than Hash

[azumakuniyuki]

• https://github.com/azumakuniyuki/ruby-benchmark-collection/blob/master/array-vs-hash.rb

% ruby -v
ruby 2.6.4p104 (2019-08-28 revision 67798) [x86_64-darwin18]
% ruby array-vs-hash.rb
ok
ok
Rehearsal --------------------------------------------
Array#[]   1.625212   0.022531   1.647743 (  1.876507)
Hash#[]    2.695574   0.032553   2.728127 (  3.927084)
----------------------------------- total: 4.375870sec

               user     system      total        real
Array#[]   1.778634   0.026975   1.805609 (  2.216943)
Hash#[]    2.386689   0.033003   2.419692 (  2.665415)
ruby array-vs-hash.rb  8.60s user 0.14s system 80% cpu 10.932 total

% /opt/local/bin/ruby -v
ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [x86_64-darwin21]
% /opt/local/bin/ruby ./array-vs-hash.rb
ok
ok
Rehearsal --------------------------------------------
Array#[]   1.550450   0.013008   1.563458 (  1.597389)
Hash#[]    1.991518   0.012844   2.004362 (  2.022441)
----------------------------------- total: 3.567820sec

               user     system      total        real
Array#[]   1.639153   0.013144   1.652297 (  1.672645)
Hash#[]    2.539378   0.022435   2.561813 (  2.734693)
/opt/local/bin/ruby ./array-vs-hash.rb  7.87s user 0.11s system 96% cpu 8.288 total