Programming, AI, Machine Learning & Software Development Tutorials
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 is always equal to the same number: the magic constant. You will be given a 3*3 matrix of integers in the inclusive range [1,9]. We can convert any digit a to any other digit b in the range [1,9] at cost of [a,b]. Given s, convert it into … Read more
Introduction In the world of networking, ensuring that devices are reachable is a fundamental aspect of troubleshooting and monitoring. One common method to test this reachability is by using the ping command. In this blog post, we will explore a simple Python script that prompts the user for an IP address and checks its reachability … Read more
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 first, assuming the mouse does not move and the cats travel at equal speed. If the cats arrive at the same time, the mouse will … Read more
You are in charge of the cake for a child’s birthday. You have decided the cake will have one candle for each year of their total age. They will only be able to blow out the tallest of the candles. Count how many candles are tallest. Example candles=[4,4,1,3] The maximum height candles are 4 units high. … Read more
Given five positive integers, find the minimum and maximum values that can be calculated by summing exactly four of the five integers. Then print the respective minimum and maximum values as a single line of two space-separated long integers. Example arr=[1,3,5,7,9] The minimum sum is 1+3+5+7=16 and the maximum sum is 3+5+7+9=24 . The function prints Function Description … Read more
Staircase detail This is a staircase of size n=4: Its base and height are both equal to 4 . It is drawn using # symbols and spaces. The last line is not preceded by any spaces. Write a program that prints a staircase of size n. Function Description Complete the staircase function in the editor below. staircase has the following parameter(s): Print Print … Read more
Given an array of integers, calculate the ratios of its elements that are positive, negative, and zero. Print the decimal value of each fraction on a new line with places after the decimal. Note: This challenge introduces precision problems. The test cases are scaled to six decimal places, though answers with absolute error of up to 10^-4 are acceptable. Example … Read more
Given a square matrix, calculate the absolute difference between the sums of its diagonals. For example, the square matrix is shown below: The left-to-right diagonal =1+5+9=15. The right to left diagonal = 3+5+9=17. Their absolute difference is |15-17|=2. Function description Complete the diagonalDifference function in the editor below. diagonalDifference takes the following parameter: Return Input Format The first line … Read more
Alice and Bob each created one problem for HackerRank. A reviewer rates the two challenges, awarding points on a scale from 1 to 100 for three categories: problem clarity, originality, and difficulty. The rating for Alice’s challenge is the triplet a = (a[0], a[1], a[2]), and the rating for Bob’s challenge is the triplet b = (b[0], b[1], b[2]). The task is to find … Read more
Till now, We have read about Gradient Descent,Min-Batch Gradient Descent,Stochastic Gradient Descent and other type of Gradient Descents and Polynomial Regression. In this post we will learn about Learning Curves in Machine Learning . Introduction Learning curves are graphical representations of how a model’s performance changes over time as it learns from training data. These … Read more
Introduction Till now, We have read about Gradient Descent,Min-Batch Gradient Descent,Stochastic Gradient Descent and other type of Gradient Descents. In this post we will learn about Polynomial Regression. What if your data is actually more complex than a simple straight line? Surprisingly,you can actually use a linear model to fit nonlinear data. A simple way … Read more
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, we’ll explore simple implementations in C for both the two-sum and three-sum problems using both iterative and recursive methods. Two Sum Problem Iterative Approach The … Read more
What is Dataset? Datasets are container of data in python. It can work as data storage for the various algorithms in python. and also a primary storage of data in Data Science. Below I will be discussing how to import a datasets as dataframe in python. For this post I’ll be using a public dataset … Read more
What is CRUD operation ? 2. In Database we generally perform four operation : C – Create : It will be perform create database by Inserting data . R – Read : It will be perform Read operation of database. U – Update : It will be perform Update Database by using unique key. D … Read more
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 program use following command: gcc -o filename filename.c $(pkg-config –libs –cflags libmongoc-1.0) Issues: 1. $(pkg-config –libs –cflags libmongoc-1.0) , this command in above command is … Read more
Step 1 : Download mongo-c-driver
Step 2 : Updated GCC and G++ compiler after version 5 .current version 7 in system .
Step 3 : Mongo-c-driver Version(1.15.x) version is same version and with mongo-cxx-driver (3.5.x)
Step 4 : Updated CMake 3.2 or later.
Step 5 : Install Mongo-cxx-driver
Step 1: Add the MongoDB Repository First, create a .repo file for MongoDB. This will make sure you can install the latest stable version of MongoDB. Create the repo file: Add the next content to the file: 3. Save and exit: Press Ctrl + O to write out, then press Enter. Press Ctrl + X … Read more
Coalesce is a SQL function used for handling NULL values. It returns the first non-null expression from the list. Each expression is evaluated for being NULL or not and the first non-null expression will be returned as the output. It takes at least two arguments in the list.