ref: f7ff6155f5c57b8ece62dd8f1401c69e3bf3c6a4 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