Does concurrenthashmap allow null?
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What do you know about different sorting algorithms?
What are the different binary tree traversal techniques?
Which language is best to learn data structures?
Define depth and height of a tree?
Can arraylist store primitives?
Which time complexity is best?
What is circular queue example?
Reverse a linked list from the middle.
What is a spanning tree?does the minimum spanning tree of a graph give the shortest distance between any 2 specified nodes?
What are the tasks performed during postorder traversal?
Difference between arraylist and linkedlist?
Tell me why might quick sort might be better than merge sort?