Can arraylist be empty?
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what is binary tree?
What are the applications of graph data structure?
What is the difference between b tree and binary search tree?
Tell me do array subscripts always start with zero?
Why is hashmap faster?
Check if duplicates exist in an array of N which has range 1 to N.
How will you free the memory that is allocated at run time?
How are elements stored in hashset?
Is binary tree a bst?
Differentiate between list and set.
What do you mean by tree edge?
Define in brief an array. What are the types of array operations?