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radix sort
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OpenJDK 64-Bit Server VM 11.0.10+9-LTS on Linux 5.4.0-1043-azure
Intel(R) Xeon(R) CPU E5-2673 v4 @ 2.30GHz
radix sort 25000000:                      Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
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reference TimSort key prefix array                13491          13527          52          1.9         539.6       1.0X
reference Arrays.sort                              3526           3541          21          7.1         141.0       3.8X
radix sort one byte                                 550            561           9         45.5          22.0      24.5X
radix sort two bytes                               1038           1058          28         24.1          41.5      13.0X
radix sort eight bytes                             4205           4214          13          5.9         168.2       3.2X
radix sort key prefix array                        7674           7713          55          3.3         307.0       1.8X


