To put it simply, is n a number that is a sham of 2? How is it? tell me~~ That No, it ’s really too appropriate and I ’m going to get angry. Click here for details.
https://atarimae.biz/archives/20521
bekijyo.rb
if (n&(n-1)) == 0 then
puts "Power of 2"
else
puts "Not a power of 2"
end
I didn't know "exponentiation" in the first place, so I made a great detour. It's a uselessly complicated formula, but from the middle "There is a judgment formula that can be solved in one shot." It's already a haguri festival.
That's why it's difficult to go through without knowing the words, It depends on whether you can get there, but if it helps someone.
that's all. I bruised.
Recommended Posts