What is complete binary tree and almost complete binary tree?
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What is time complexity of hashmap?
Can we make hashmap synchronized?
Explain merge sort algorithms.
What is tree and its properties?
Explain quick sort?
Which collection class is thread safe?
Differentiate between singly and doubly linked lists?
What is binary search tree and explain its time complexity?
what is the primary advantage of a linked list?
How does the size of arraylist increases dynamically?
Why is map not a collection?
There are 2 int type array data type. One is containing 50 elements, and another one is containing 30 elements. Can we assign the array of 50 elements to an array of 30 elements?