ref: 4fd18f1c27d3f1eba10c849a3c9cdb7d9dc33abc 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