static void Main(string[] args)
{
string inputString = "abba";
int result;
Solution1 sol = new Solution1();
result = sol.LengthOfLongestSubstring(inputString);
Console.WriteLine(result);
}
static void Main(string[] args)
{
int result;
// Solution1 Test
result = Solution1.LengthOfLongestSubstring("pwwkew");
Console.WriteLine($"Approach 1: Brute Force\nresult: {result}");
// Solution2 Test
result = Solution2.LengthOfLongestSubstring("pwwkew");
Console.WriteLine($"Approach 2: Sliding Window\nresult: {result}");
//Solution3 Test
result = Solution3.LengthOfLongestSubstring("pwwkew");
Console.WriteLine($"Approach 3: Sliding Window optimized\nresult: {result}");
}