Problem 2644. The Ulam Matrix
The Ulam spiral is simple to describe. On a gridded piece of paper, write down the number 1. Then write successive integers as you spiral out in a counter-clockwise fashion. For example:
17 16 15 14 13 18 5 4 3 12 19 6 1 2 11 20 7 8 9 10 21 22 23 24 25
Although you can stop writing numbers at any time, for the purpose of this problem let's assume you want to fill an N x N square matrix with numbers from 1 to N^2.
Solution Stats
Problem Comments
-
1 Comment
Nice problem! At least if you don't use MATLAB's existing function for this.
Solution Comments
Show commentsProblem Recent Solvers41
Suggested Problems
-
Is my wife right? Now with even more wrong husband
1316 Solvers
-
Back to basics 12 - Input Arguments
586 Solvers
-
Given a matrix, return the last eigen value
216 Solvers
-
900 Solvers
-
Convert given decimal number to binary number.
1891 Solvers
More from this Author2
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!