leetcode_gym/_problems/reverseString.md

layout, title, last_solved, category, leetcode_url, status

layout	title	last_solved	category	leetcode_url	status
page	Reverse String	2020-06-01	string	https://leetcode.com/problems/reverse-string/	Solved

Problem

{% highlight text %}

Example 1:

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

{% endhighlight %}

Solution

{% highlight python %}

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

if not s: return

start = 0
end = len(s)-1

while start<end:
    
    tmp = s[start]
    s[start] = s[end]
    s[end] = tmp
    
    start+=1
    end-=1

{% endhighlight %}