ref: 0b296ffc4dfa7765a52a6f83e1dabb2aa81d5c2a 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