A number is perfect if it is equal to the sum of its factors, excluding itself.
The number 6 is perfect since its factors (other than 6) are 1, 2, and 3.
1 + 2 + 3 = 6
Return 1 for true (perfect), otherwise 0.
Could you improve your test suite with more test cases? (e.g. 496, 28 (true) and 26, 500 (false))
I added some more tests.
See problem 1012.
The point "the sum of its factors" is not correct. it must be "the sum of all his divisors"... :-/
The Answer to Life, the Universe, and Everything
Output any real number that is neither positive nor negative
Flip the bit
Sort the vector with the given index
Decide whether determinant is zero.
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