# magic square 3x3 in python

I kept getting an error "use of moved variable", and then realized that for i in vector transfers ownership; nice lesson learned! Including bonus #2. Even with this all broken up into functions, it's still 7 lines shorter than the original. A 3x3 magic square is a 3x3 grid of the numbers 1-9 such that each row, column, and major diagonal adds up to 15. Next: Write a Python program to print all primes (Sieve of Eratosthenes) smaller than or equal to a specified number. If they are the same, this means that the square is a magic one. Write a function that, given a grid containing the numbers 1-9, determines whether it's a magic square. It could be cleaned up a bit using all: At least that gets rid of the ugly line continuations. rev 2020.11.4.37941, The best answers are voted up and rise to the top, Code Review Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us, Podcast 283: Cleaning up the cloud to help fight climate change, Creating new Help Center documents for Review queues: Project overview, Searching a 2D matrix for a consecutive sequence, python magic square finder for arbitrary numbers, Python function to find all integers between two numbers whose sum of squared divisors is a perfect square, Determine whether any permutation of a given array exists such that the sum of all subarrays of length K are equal, Determining if a given square is a magic square, Suggestions for braking with severe osteoarthritis in both hands. Here we will show you an easy example so that you can understand this tutorial easily. Python implementation, trying to be terse.

Here's an example: 8 1 6 3 5 7 4 9 2 The major diagonals in this example are 8 + 5 + 2 and 6 + 5 + 4. A magic square is an arrangement of distinct numbers (i.e., each number is used once), usually integers, in a square grid, where the numbers in each row, and in each column, and the numbers in the main and secondary diagonals, all add up to the same number, called the "magic constant." My solutions is far from perfect though. This is my try, idk how great it is, you have so much more going on than I do. Why does the VIC-II duplicate its registers? The following tool visualize what the computer is doing step-by-step as it executes the said program: Have another way to solve this solution? How many times do you roll damage for Scorching Ray?

(Magic squares have appeared here on r/dailyprogrammer before, in #65 [Difficult] in 2012.)

The dimension of the square matrix is an (odd integer x odd integer) e.g., 3×3, 5×5, 7×7. The square is itself having smaller squares (same as a matrix) each containing a number. I've tried to solve the above problem. Backtracking algorithms can be used for other types of problems such as solving a Magic Square Puzzle or a Sudoku grid. Check that it contains the correct set of numbers. This is a 3x3 magic square used in Feng Shui which is represented as well. You do not need to parse the grid from the program's input, but you can if you want to. Get ready for the new computing curriculum. Find new computing challenges to boost your programming skills or spice up your teaching of computer science. Your email address will not be published. And this only checks if a 9 number list is a magic square. Why is the rate of return for website investments so high? Given a 3*3 matrix, find the minimum number of changes that need to be made to it in order to turn it into a magic square. The dimension of the square matrix is an (odd integer x odd integer) e.g., 3×3, 5×5, 7×7. Short story called "Daddy needs shorts", baby unconsciously saves his father from electrocution.

Java solution for 3x3, no bonuses yet. A recursive function is a function that calls itself until a condition is met. The sum is called the magic constant or magic sum of the magic square. Like I said above, I'm doing a few things quite wastefully. Your code was returning a valid result even though the required packages for the code to run weren't even imported. # Create an N x N magic square. I normally don't like to do complete rewrites for reviews as I don't think that they're usually helpful. A Magic Square is a n x n matrix of distinct element from 1 to n. 2 where the sum of any row, column or diagonal is always equal to same number.. One should almost never use a bare except clause. It is true because all the 3x3 magic squares are related by symmetry. Output: 1 1 0 0 1 0.

You aren't making good use of built-in Python constructs that automate some of the painful elements. Feedback is welcome! By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service.

I know this challenge is quite old but I've tried to find easy ones on here I think I can do but I figured I might as well submit it since I made it work.