Why do we use trees in data structures?
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What is the use of tree data structure?
What is the use of heap sort?
Write the postfix form of the expression: (a + b) * (c - d)
If you are given a choice to use either arraylist and linkedlist, which one would you use and why?
Which sorting is best in time complexity?
Tell me what is quick sort?
What is the time complexity of arrays sort?
Define heap?
Which is faster hashmap or linkedhashmap?
What are the major data structures used in the network data model?
No. of possible ordered trees with n nodes ? Please give formula (if any).
Explain about set and their types in a collection?