Given two strings, print all the characters which appears in only one of the strings (char may be repeated in a string, but it should not be present

What is the difference between MAC address and IP address?

Total number of squares on a chess boards. Expand your solution to number of rectangles on the board

fork command is used to duplicate existing process. What is this command and how is it used

Both TCP & UDP protocols are in Transport layer of TCP/IP protocol suite. What is the difference between the two?

Given a pointer to the node, write code to find its in-order successor. (Node also stores pointer to the parent node.

Given a doubly linked list, write a code to reverse the list.

A Sum-Tree is a Binary Tree where every non-leaf Node is equal to the sum of its child node.

IPv6 is successor of IPv4 (protocol currently used in almost all the internet traffic). How many addresses are available in IPv6

Write code to check if a number is a palindrome, ex. 24542 is palindrome, but 5234 is not

Given a square matrix, print all the elements in diagonal order

Given a n*n matrix, write code to print both the diagonals (top-left to bottom-right and bottom-left to top-right)

If two strings are "AB" & "12" then your code should print: AB12, A1B2, A12B, 1AB2, 1A2B, 12AB

Where will you find the minimum value node in a Binary Search Tree

Given an array of m elements, write code to shift all elements forward by k positions (Size of array is sufficient to make the shift).

Given an array which has only 0s and 1s. write an algorithm to sort the array.

Write a function which will accept an integer and returns sum of digits in that integer.

Given a linked list. write code to delete alternate nodes from that list.

Given a stream of numbers (numbers will keep coming). write code which will print average at each point (after reading each number)

Give an optimization of bubble sort so that the best case time of bubble sort is bettered

Design a Stack which holds integers and returns minimum element in Stack in O(1) time.

difference between infix, prefix & postfix notation (also called polish Notations)

What is dynamic_cast in C++ and where is it used?

Given 6 circles arranged in the form of triangle. To invert the triangle, at least how many circles need to be moved

Given two Binary trees, write code to check if first is a subtree of second

If base of a Right angled triangle is increased 4 times and height is reduced to half, what will be the effect on its area?

How much byte-addressable memory you can use with 12 bits address bus.

If digits of my age are reversed you will get my son's age. Last year my son was half as old as I was. find my current age

What is the attack called 'Man-In-The-Middle', on the data being transferred over the network

Given 3 baskets having Apples, Oranges & Mixture. All labeled incorrectly. You can only see 1 fruit from 1 basket and have to correct the labels.

What is lvalue and rvalue in C/C++ language. what is the difference between the two.

Write code to calculate the size of a struct in C (or C++) without using sizeof operator

What are the differences between typedef and #define in C/C++ language

How will you check if a number is a Fibonacci number or not (Fibonacci numbers are: 0, 1, 1, 2, 3, 5, 8, 13, 21 ... )

Given the preorder an inorder traversal of a Binary tree, construct the Tree.

How many null pointers will be there in a binary tree having n nodes

What will be the output of this given C code. (returning reference of local variables from function)

Write a program which prints 'Hello World' but does not have any semicolon in the entire program.

What will be the output (or Error) in the Given C Language program

Write the code to implement a Stack data structure in C++ using Linked List.. separate the declaration & definition of functions in the class.

Write code (Algorithm) to convert an expression given in in-fix notation to the corresponding expression in post-fix notation

Write a function to check if the input string has parenthesis in matched form or not. For example: ()(()) - Matched Parenthesis (() -

Write a class such that no user should be able to create object of this class on stack. User should be able to create object on heap.

Two numbers are given in the form of Linked List (may have different no. of digits). write an algorithm to add these two numbers

Write an effective O(n) time algorithm to compute the summation: F(x) = Cn.x^n + Cn-1.x^(n-1) + ... ... + C2.x^2 + C1.x + C0. (Hint: Use Horner's Met

What is the difference between linked list and arrays.

Write a function to return the number of non-leaf nodes of a binary tree.

Write a function to convert a Binary tree to its mirror

Write a function to check if a given linked list is a palindrome or not.

You have a Bridge that will collapse in 17 minutes & 4 people who takes 1, 2, 5 & 10 min resp. to cross. There is only one torch and only 2 people ca