Pregunta de entrevista de Samsung Electro-Mechanics

Interview Date: Feb 2017 Interview process: 1)MCQ round (java and android) - found it pretty easy 2)Programming test - two questions in option * Find the number of chars which repeat in other * Assume worlds calendar starts at year say 1900 and ends at 2050. Then given a year and month print calender for that month without using date. Starting day was also mentioned. 3)Technical interview *discussed about java, android *Talked about creating our own implementations of Arraylist, Map, Arraylist vs array *bound vs unbound services in android *Where I messed up: In explaning how UI binds to Service. The word he was looking for was event - listener model implemented with the help of interfaces *Need to know get, insert, delete operations in Arraylist, map, array with timecomplexity (also in java) 4)Management interview - didnt reach here. Bcoz I didnt have professional android experience. 5)MD interview - interview with head of that unit.