Problem 50887. Draw a '8' in a zero matrix!

Szász Botond

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Given a x-by-x matrix filled with zeros (x is odd and > 3). Use 8s to draw a number 8 into it! Like this:
x = 5, y =
8	8	8	8
0	0	0	8
8	8	8	8
0	0	0	8
8	8	8	8
x = 7, y = 
8	8	8	8	8	8
0	0	0	0	0	8
0	0	0	0	0	8
8	8	8	8	8	8
0	0	0	0	0	8
0	0	0	0	0	8
8	8	8	8	8	8

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950 Solutions

673 Solvers

Last Solution submitted on Feb 25, 2026

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3 Comments

Szász Botond on 10 Mar 2021

Please like it if it wasinteresting!

Tran Tran on 5 May 2022

There is a very interesting solution that is create 7 segements on your array like a "7-segment Display"
https://www.electronics-tutorials.ws/blog/7-segment-display-tutorial.html
This way may seem more complicated but once you has the data of segements' coordinate on your matrix you can automate other solution in this group easily.
So i can call it is a master solution

Nicolas Douillet on 18 Jul 2025

Created the two blocks of zeros in a matrix of 8 ;-)

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