If you do not initialize an array what will happen?
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What is inserting in data structure?
Differentiate between hashset and treeset.
How do you find the complexity of a bubble sort?
Why is hashmap used?
Why null is not allowed in treemap?
What is the minimum number of nodes in an avl tree of height h?
State the merits of linear representation of binary trees?
What is the difference between hashmap and treemap?
Explain quick sort and merge sort algorithms and derive the time-constraint relation for these.
Define the term “percolate down”?
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 ].
What are the disadvantages of representing a stack or queue by a linked list?