cpp-flashcards/org/study_deck_02/dsa/bit-manipulation/0007-reverse-integer.org

#+PROPERTY: STUDY_DECK_02
* TODO 0007. Reverse Integer :medium:
:PROPERTIES:
:NEETCODE: [[file:../../roadmap.org::*0007. Reverse Integer][0007. Reverse Integer]]
:END:

Given a signed 32-bit integer ~x~, return ~x~/ with its digits reversed/. If reversing ~x~ causes the value to go outside the signed 32-bit integer range ~[-2^{31}, 2^{31} - 1]~, then return ~0~.

*Assume the environment does not allow you to store 64-bit integers (signed or unsigned).*

*Example 1:*


#+begin_src
Input: x = 123
Output: 321
#+end_src


*Example 2:*


#+begin_src
Input: x = -123
Output: -321
#+end_src


*Example 3:*


#+begin_src
Input: x = 120
Output: 21
#+end_src


*Constraints:*

 - ~-2^{31} <= x <= 2^{31} - 1~

** TODO Approach
Write your approach here.

** TODO Python
#+begin_src python
class Solution:
    def reverse(self, x: int) -> int:
#+end_src

** TODO C++
#+begin_src cpp
class Solution {
public:
    int reverse(int x) {
        
    }
};
#+end_src