Explain Array of pointers?
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What is pivot in quicksort?
How is it possible to insert different type of elements in stack?
Why do we need linked lists?
Can you have an arraylist of arrays?
Which of the collections allows null as the key?
Construct a doubly linked list using a single pointer in each node?
Which time complexity is best?
Is merge sort better than quick?
What is difference between linear and non linear data structure?
Why is quicksort not stable?
Why it is said that searching a node in a binary search tree is efficient than that of a simple binary tree?
Explain quick sort and merge sort algorithms.