Pregunta de entrevista de EPAM Systems
What is singleton class, and how to create a singleton class in java? Difference between abstract class and an interface. Number of islands in a 2d matrix. Checking for a loop in a linkedlist.
What is singleton class, and how to create a singleton class in java? Difference between abstract class and an interface. Number of islands in a 2d matrix. Checking for a loop in a linkedlist.