What is entryset method in map?
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Given an array of integers, devise a program to replace every element with the next greatest element on the right side in the array. Also, replace the last element with 5 as there no element on the right side of it.
Explain recursive function & what is the data structures used to perform recursion?
When will you sort an array of pointers to list elements, rather than sorting the elements themselves?
What can be stored in an arraylist?
Why hashmap is faster than hashset?
What is hash value of a string?
How does hashset work internally in java?
Define union-by-weight?
How do you increase the capacity of an arraylist?
What is difference between arraylist and list?
Given M x N matrix with sorted elements row wise and column wise, find elements?
Is vector synchronized?