What are three common types of traversals?
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Which sorting algorithm has minimum number of swaps?
What does sorting an array do?
What is the purpose of sorting algorithms?
Why do we need algorithm?
What is dangling pointer and how to avoid it?
Treemap orders the elements on which field?
what is a balanced tree.
What is the difference between collections class vs collections interface?
How does max heap work?
What is the difference between push and pop?
What is the height of an empty tree?
Is hashmap an array?