What is a matrix?
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Which data structures are used in bfs and dfs algorithm?
Which is the parent class of hashmap class?
Can we add duplicate keys in a hashmap? What will happen if we attempt to add duplicate values?
On clicking a node in a tree, all the adjacent edges are turned on. Calculate min of clicks such that all the edges are turned on.
What is the space complexity of selection sort?
What is an externalizable interface?
How does selection sort work?
Why is arraylist faster than linkedlist?
What is the purpose of tochararray ()?
Is binary tree balanced?
Can an arraylist be null?
What is array indexing?