All Hard Articles

The Great Tree-List Recursion Problem.

Asked by Varun Bhatia. Question: Write a recursive function treeToList(Node root) that takes an ordered binary tree and rearranges the internal pointers to make a… Read More

circular linked list

doubly linked list

DSA

Linked List

Tree

C# Program to print all permutations of a given string

A permutation also called an “arrangement number” or “order,” is a rearrangement of the elements of an ordered list S into a one-to-one correspondence with… Read More

C# Programs

How will you show memory representation of C variables?

Write a C program to show memory representation of C variables like int, float, pointer, etc. Algorithm: Get the address and size of the variable. Typecast the… Read More

c-puzzle

C Language