cpp-flashcards/org/study_deck_02/dsa/two-pointers/0344-reverse-string.org

#+PROPERTY: STUDY_DECK_02
* TODO 0344. Reverse String :easy:
:PROPERTIES:
:NEETCODE: [[file:../../roadmap.org::*0344. Reverse String][0344. Reverse String]]
:END:

Write a function that reverses a string. The input string is given as an array of characters ~s~.

You must do this by modifying the input array in-place with ~O(1)~ extra memory.

*Example 1:*


#+begin_src
Input: s = ["h","e","l","l","o"]
Output: ["o","l","l","e","h"]
#+end_src
*Example 2:*


#+begin_src
Input: s = ["H","a","n","n","a","h"]
Output: ["h","a","n","n","a","H"]
#+end_src


*Constraints:*

 - ~1 <= s.length <= 10^{5}~

 - ~s[i]~ is a printable ascii character.

** TODO Approach
Write your approach here.

** TODO Python
#+begin_src python
class Solution:
    def reverseString(self, s: List[str]) -> None:
        """
        Do not return anything, modify s in-place instead.
        """
#+end_src

** TODO C++
#+begin_src cpp
class Solution {
public:
    void reverseString(vector<char>& s) {
        
    }
};
#+end_src