What is complete binary tree in data structure?
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Define hash table?
When new data are to be inserted into a data structure?
Why hashmap is faster than hashset?
What do you mean by selection sort?
Can we use Generics with the array?
What is the height of a binary tree?
In what scenario, binary search can be used?
Describe the complexity of Quick Sort
What are the four types of variables?
What is the difference between null and void pointer in data structures?
Define the tree data structure.
Can we null keys in treemap?