What is peek in stack?
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Can arraylist store primitives?
What is comparator interface used for?
Define the term “percolate up”?
Can we declare array size as a negative number?
How to sort 1 million floating point numbers?
Differentiate between queue and stack.
What is Jagged Arrays?
Can we search the data in a linked list?
Is treeset synchronized?
Is list a data structure?
Give a good data structure for having n queues ( n not fixed) in a finite memory segment. You can have some data-structure separate for each queue. Try to use at least 90% of the memory space.
What is the use of isEmpty() member methods?