Check if at least two out of three booleans are true

Question

An interviewer recently asked me this question: given three boolean variables, a, b, and c, return true if at least two out of the three are true.

My solution follow

Answer 1

As an addition to @TofuBeer TofuBeer's excellent post, consider @pdox pdox's answer:

static boolean five(final boolean a, final boolean b, final boolean c)
{
    return a == b ? a : c;
}

Consider also its disassembled version as given by "javap -c":

static boolean five(boolean, boolean, boolean);
  Code:
    0:    iload_0
    1:    iload_1
    2:    if_icmpne    9
    5:    iload_0
    6:    goto    10
    9:    iload_2
   10:    ireturn

pdox's answer compiles to less byte code than any of the previous answers. How does its execution time compare to the others?

one                5242 ms
two                6318 ms
three (moonshadow) 3806 ms
four               7192 ms
five  (pdox)       3650 ms

At least on my computer, pdox's answer is just slightly faster than @moonshadow moonshadow's answer, making pdox's the fastest overall (on my HP/Intel laptop).