How is any data structure application is classified among files?
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What is the space complexity of bubble sort?
What are the types of bulleted list?
Which is better hashset or treeset?
Why do we use binary search?
What does arrays tostring do?
Can hashmap be sorted?
Explain how is linked list implemented?
What are the types of data structures?
Differentiate between iterator and listiterator.
What happens if an array goes out-of-bounds?
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 ].
Can we put null value in hashmap?