#+ANKI_DECK: study_deck_02
* TODO 0190. Reverse Bits :easy:
:PROPERTIES:
:NEETCODE: [[file:../../roadmap.org::*0190. Reverse Bits][0190. Reverse Bits]]
:END:

Reverse bits of a given 32 bits signed integer.

*Example 1:*

*Input:* n = 43261596

*Output:* 964176192

*Explanation:*

 Integer
 Binary

 43261596
 00000010100101000001111010011100

 964176192
 00111001011110000010100101000000

*Example 2:*

*Input:* n = 2147483644

*Output:* 1073741822

*Explanation:*

 Integer
 Binary

 2147483644
 01111111111111111111111111111100

 1073741822
 00111111111111111111111111111110

*Constraints:*

 - ~0 <= n <= 2^{31} - 2~

 - ~n~ is even.

*Follow up:* If this function is called many times, how would you optimize it?

** TODO Approach
Write your approach here.

** TODO Python
#+begin_src python :lc-problem 190 :lc-lang python3
class Solution:
    def reverseBits(self, n: int) -> int:
#+end_src

** TODO C++
#+begin_src cpp :lc-problem 190
class Solution {
public:
    int reverseBits(int n) {
        
    }
};
#+end_src