Define non-terminal nodes in a tree?
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an array of size N in which every number is between 1 and N, determine if there are any duplicates in it. You are allowed to destroy the array if you like. [ I ended up giving about 4 or 5 different solutions for this, each supposedly better than the others ].
Classify the Hashing Functions based on the various methods by which the key value is found.
Can we put null value in hashmap?
What is storage structure in data structure?
What does a treemap do?
List the two important key points of depth first search?
What happens if an array goes out-of-bounds?
What are some of the best practices relating to the java collection framework?
What is minimum depth of binary tree?
State the difference between arrays and linked lists?
What are different types of linked lists?
Is arraylist heterogeneous?