leetcode_344(reverse string)

水题。模板。

char* reverseString(char* s) {
	int i, j;
	for (i = 0, j = strlen(s) - 1; i < j; i++, j--)
	{
		char c = s[i];
		s[i] = s[j];
		s[j] = c;
	}
    return s;
}