Hackerrank | Magic Square
We define a magic square to be an n*n matrix of distinct positive integers from 1 to n^2 where the sum of any row, column, or diagonal of length n…
Hackerrank | Cats and a Mouse
Two cats and a mouse are at various positions on a line. You will be given their starting positions. Your task is to determine which cat will reach the mouse…
C Program to get Two Sum and Three Sum
When working with arrays, solving problems like finding two elements that sum up to a target or three elements with a specific sum is quite common. In this blog post,…
CRUD Operation in Mongo-cxx
What is CRUD operation ? 2. In Database we generally perform four operation : C – Create : It will be perform create database by Inserting data . R –…
Installing the Mongodb-C Driver (libmongoc) and BSON library (libbson)
Step 1 : Run the Following Command: wget https://github.com/mongodb/mongo-c-driver/releases/download/1.6.3/mongo-c-driver-1.6.3.tar.gz tar xzf mongo-c-driver-1.6.3.tar.gz cd mongo-c-driver-1.6.3 ./configure --disable-automatic-init-and-cleanup --prefix=/usr/local --libdir=/usr/lib64 --with-libbson=bundled make make install Step 2 : To compile and run the…