Handling mouse and keyboard of your system using python is easy with pyautogui package.

In this article, i'll show how to …

We can easily generate QR codes with python using pyqrcode module. It takes a string as input and generate QR code …

C++ comes with handy Trigonometric functions. They are in math.h header file. During coding contests they are very useful whenver …

You are given an array of N integer elements,  let's call it arr.

Your task is to remove 1 element …

The localtime() function is defined in the time.h header file. The localtime( ) function return the local time of the …

Several programmers solve a lot of problems of easy level and medium level but they fail to solve hard level …

There are lot of C++ Hacks you can use to save time in competitive programming. Here are few of them …

Given an array arr[] of N integers and an integer K. The task is to find the maximum xor subset …

Given an array of one digit numbers. Your task is to find out the minimum number of steps that is …

We want to add 2 numbers without using arithmetic operator ( + , - , / , * ) . The trick here is to use properties of XOR.  …