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

• 0344. Reverse String
  • Approach
  • Python
  • C++

TODO 0344. Reverse String   easy

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:

Input: s = ["h","e","l","l","o"]
Output: ["o","l","l","e","h"]

Example 2:

Input: s = ["H","a","n","n","a","h"]
Output: ["h","a","n","n","a","H"]

Constraints:

• 1 <= s.length <= 10^{5}
• s[i] is a printable ascii character.

TODO Approach

Write your approach here.

TODO Python

class Solution:
    def reverseString(self, s: List[str]) -> None:
        """
        Do not return anything, modify s in-place instead.
        """

TODO C++

class Solution {
public:
    void reverseString(vector<char>& s) {
        
    }
};