reverse string

Author: Pneha12

Day4: reverse string

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+Reverse String
+
+Write a function that reverses a string. The input string is given as an array of characters char[].
+
+Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra memory.
+
+You may assume all the characters consist of printable ascii characters.
+
+ 
+
+Example 1:
+
+Input: ["h","e","l","l","o"]
+Output: ["o","l","l","e","h"]
+
+Example 2:
+
+Input: ["H","a","n","n","a","h"]
+Output: ["h","a","n","n","a","H"]
+
+

day4:solution.py

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