Created
November 13, 2013 10:06
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A little Nerd-Test: What does foo() do?
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| static int[] t = {0, 5, 1, 6, 4, 3, 2, 7}; | |
| int foo(final byte value) { | |
| int x = value & 0xff; | |
| x |= x >> 1; | |
| x |= x >> 2; | |
| x |= x >> 4; | |
| x *= 0x1d; | |
| x &= 0xff; | |
| x >>= 5; | |
| return t[x]; | |
| } |
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No spoilers please.