Draw a '2' in a zero matrix! - MATLAB Cody - MATLAB Central

Problem 50877. Draw a '2' in a zero matrix!

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Given an x-by-x matrix filled with zeros (x is odd and > 3). Use 2s to draw the number 2 into it! Like this:
x = 5, y =
2 2 2 2 2
0 0 0 0 2
2 2 2 2 2
2 0 0 0 0
2 2 2 2 2
x = 7, y =
2 2 2 2 2 2 2
0 0 0 0 0 0 2
0 0 0 0 0 0 2
2 2 2 2 2 2 2
2 0 0 0 0 0 0
2 0 0 0 0 0 0
2 2 2 2 2 2 2
Solve

Solution Stats

65.42% Correct | 34.58% Incorrect
Last Solution submitted on Mar 01, 2025

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Primes and Rough Numbers, Basic ideas
What is a rough number? What can they be used...
John D'Errico in Tips & Tricks
3
5
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