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/gist:7446622

Created November 13, 2013 10:06
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A little Nerd-Test: What does foo() do?
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gistfile1.txt
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];
}
@joa
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joa commented Nov 13, 2013

No spoilers please.

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