Advanced problems related to Data Structures were asked
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How do hash tables work?
What is the difference between hashmap and linkedhashmap?
How to get top two numbers from an array?
How does quicksort partition work?
What is an acyclic graph?
How do you replace an element in an arraylist?
Why quicksort is called quick?
What is a sorting algorithm in data structure?
No. of possible ordered trees with n nodes ? Please give formula (if any).
Can arraylist shrink?
What are red-black trees?
What is mergesort and hashtable?