How to fill element (initialize at once) in an array?
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Can we remove element from arraylist while iterating?
What is best time complexity?
Why is hashmap faster?
Explain the uses of binary tree.
Differentiate between the singly linked list and doubly linked list.
There are 8, 15, 13, 14 nodes were there in 4 different trees. Which of them could have formed a full binary tree?
Which is better selection or bubble sort?
No. of possible ordered trees with n nodes ? Please give formula (if any).
What you mean by sorting?
Why do we use sorting?
How does a binary search work?
Explain how is linked list implemented?