Does treemap allow null key?
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Is arraylist a list?
Name few collections map implementations?
What is array and structure?
What is merge sort and how it works?
What is the difference between a stack and an array?
Can arraylist have null values?
Is complete binary tree?
What is the difference between binary tree and binary search tree?
Why is the isempty() member method called?
What is a threaded binary tree? Explain its operation with example?
Which of the collections allows null as the key?
What are the types of collision resolution strategies in open addressing?