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344. Reverse String.py

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'''

Write a function that takes a string as input and returns the string reversed.

Example:

Given s = "hello", return "olleh".

'''

class Solution(object):

def reverseString(self, s):

return s[::-1]

def reverseString2(self, s):

if not s or len(s) < 2:

return s

slist = list(s)

start, end = 0, len(s)-1

while start < end:

slist[start], slist[end] = slist[end], slist[start]

start += 1

end -= 1

return "".join(slist)

s = Solution()

print(s.reverseString("hello"))