Domanda di colloquio di NEC Corporation

Coding Questions : 1) Generate a UUID(Unique identifier) 2) Sort an employee based on salary and name without using Collections.sort. 3) Write a class that implements hashcode and equals method. 4) Print missing number between 0-99. Input : 0,1,2,50,52,99,100 Output : 3-49, 51, 53-98