344. 反转字符串

344. 反转字符串

class Solution 
{
public:
	void reverseString(vector<char>& s)
	{
		if (s.empty())
			return;
		int left = 0;
		int right = s.size() - 1;
		while (left < right)
		{
			swap(s[left], s[right]);
			left++;
			right--;
		}
	}
};