public static void Main(string[] args)
{
SlidingWindow slidingWindowExample = new SlidingWindow();
Console.WriteLine(slidingWindowExample.LongestSubstring("pwwkew"));
Console.WriteLine(slidingWindowExample.LongestSubstring("abcabcbb"));
Console.WriteLine(slidingWindowExample.LongestSubstring("bbbbb"));
// Output
// 3
// 3
// 1
}
