What is the difference between arraylist and array?
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Differentiate between comparable and comparator.
How do you do a mergesort?
Which sorting is best and why?
Which is better merge or quick sort?
What is unmodifiable list?
Write a program to insert an element and in the specific position in the array?
How many different binary trees and binary search trees can be made from three nodes that contain the key values 1, 2 & 3?
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Which collection is fail safe?
Explain the expression trees?
What is a hashers run?
What does the dummy header in the linked list contain?
What is an example of an array?