ref: 01e267bc3c3db9698cd9b8f8d3faee1f1b0f2411 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