What are the four types of variables?
Why is arraylist not thread safe?
What is the minimum number of nodes that a binary tree can have?
How many sorting techniques are there?
an array of size N in which every number is between 1 and N, determine if there are any duplicates in it. You are allowed to destroy the array if you like. [ I ended up giving about 4 or 5 different solutions for this, each supposedly better than the others ].
Why do we need linked list?
What is the types of data structure?
What is sort in data structure?
How to get the index of an array element?
Are linked lists considered linear or non-linear data structure?
What do you mean by secondary clustering?
What are the issues that hamper the efficiency in sorting a file?
What is the best sorting technique?