ref: 6e5b64b5b225a3a491cc07dbb6f300bd4a5994b2 dir: /test/data/stdsort-expected/
0 1 2 3 4 5 6 7 8 9 --- 1 2 3 4 5 6 7 8 9 10 --- C Cc a aa b cC d f fuckit go