344. Reverse String.py

# 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"]

def reverseString(s):
        """
        Do not return anything, modify s in-place instead.
        """
        for i in range(0,int(len(s)/2)):
            temp=s[i]
            s[i]=s[-1-i]
            s[-1-i]=temp
        return print(reverseString(["h","e","l","l","o"]))

reverseString(["h","e","l","l","o"])