344. Reverse a String

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"]

def reverseString(self, s: List[str]) -> None: 
	for i in range(len(s)//2): 
		s[i], s[len(s)-i-1] = s[len(s)-i-1], s[i]

def reverse_string(s):

	left, right = 0, len(s) - 1 
	while left < right:
		 s[left], s[right] = s[right], s[left] 
		 
		 left += 1
		 right -= 1