ref: 0f95e4517ef3aa5d719b0ba8a20e8c64e96b0c46 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