Why null is not allowed in treemap?
Define separate chaining?
Why do we use stacks?
What is long data type?
Can we put null key in hashmap?
Can array store heterogeneous data?
What are b tree keys?
What is the use of isEmpty() member methods?
Is array a linked list?
What is list data structure?
Define in brief an array.
State the rules to be followed during infix to prefix conversions?
What are the different data structures?