What is difference between concurrenthashmap and hashtable?
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What is rule regarding overriding equals and hascode method?
Can treeset contain duplicates?
Can we add heterogeneous elements into treemap?
What data type is enum?
Reverse a linked list from the middle.
State the properties of b tree.
Can hashmap be sorted?
Why are b trees used?
What is the use of data structure?
What is an ordered list?
Describe the merge sort principle and what will be its time complexity?
What are the disadvantages of sequential storage?