SQL Query to Find Second Highest Salary
Finding the second highest salary from an employee table is a classic SQL problem the job seekers often face in their interview. Database programmers also have to solve similar problem like…
How to Implement Periodic and Single Shot Timers in Linux?
In our program, we often need to do some tasks repeatedly with some time interval. We can think of a simple solution of having a loop with the actual task…
Detect and Remove Loop in Linked List in C
What is Loop in Linked List? In a standard singly linked list, the last node always points to NULL. If you traverse such a linked list, the traversal will end…
C Program to Sort Linked List without Allocating Extra Memory
We'll first create a linked list which is not sorted, then we'll re-arrange the list such that the list becomes sorted. Logic is simple, we'll iterate the list for all…
How to Protect Android Smartphone from being Stolen
Today's smartphones are not used only to make voice calls and exchanging SMS(es), they are full-fledged computers. Today we use smartphone for various other purposes like email communication, social networking,…