private static void Main()
{
/* Current Problem */
LongestPalindromicSubString.Execute();
var obj = new LruCacheTest();
obj.TestCache();
CountTriplets.Execute();
StairwayToHeaven2.Execute();
Abbreviation.Execute();
CommonChild.Execute();
SpecialStringAgain.Execute();
/* To-Do and Refactorings */
Todo();
Refactor();
Console.ReadKey();
}