ref: 4665f57c5a86ade9ef524b3d7380f6fcd1abb0ff 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