Pergunta de entrevista da empresa ECI Telecom

I do not remember all questions but whichever I remember I will share. Written Round coding questions:- 1. Reverse String without using any method. 2. Create a link list from Array without using inbuild class. 3. Write to the program to sort complex objects like a laptop on basis of price (Collection- comparator and comparable) 1st Technical Interview Question :- All the basic questions from Core Java lite opps concepts collection multi threading all core java concepts. Layers of Networking 2nd interview Questions :- Collections Multithreading Singleton Class Few programming question to code considering time complexity