ref: 9fb48bbef2ab2b2b8cfadcac59670ebc4d0e7f17 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