ref: 3ccf3f0a5e3c33e3722a9ea29134ea5a7dacf041 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