What is difference between capacity and size of arraylist?
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Why do we use trees in data structures?
Define non-linear data structures?
Which collection is fail safe?
What is the space complexity of selection sort?
How do you insert a new item in a binary search tree?
Explain different methods in which you can traverse a tree?
Which collection type is used to maintain uniqueness of data structure?
Does arraylist extend list?
What does stack top do?
What is minimum depth of binary tree?
Define a binary tree?
How would you implement two stacks using a single array?