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Q1 Middle element in a linked list

Find the middle element in a singly linked list and code it.

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Q2 How to find whether two given trees are exactly similar?

Given 2 trees, find out if they are exactly same or not.

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Q3 How to print only leaf nodes of a tree?

Given a Tree (not binary Tree), print only leaf nodes on its path from the root.

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Q4 How to Design a stack which supports push, pop, min and max operations in O(1)?

Design a stack which supports push, pop, min and max operations in O(1).

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Q5 What are the differences between DFS and BFS?

What is the difference between DFS and BFS and compare them in terms of optimality and efficiency

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Q6 How to find whether the graph is connected and whether it is a tree?

Write a complete program check whether Graph is Connected or Not & also for whether Graph is Tree or not.

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Q7 How to find whether the graph is connected and whether it is a tree?

How will you find out if the graph is connected or not?

How will you find out if it is a tree.

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An array of size 2n, has n unique elements and n occurrences of an element. Find the non-unique element in linear time?

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Q9 How to call a C++ function which is compiled with C++ compiler in C code?

How to call a C++ function which is compiled with C++ compiler in C code?

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Q10 If you are given the name of the function at run time how will you invoke the function?

If you are given the name of the function at run time how will you invoke the function?

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