Problem 1448. Create Volcano (or Atoll) martix. It is an extension of Bullseye matrix problem.

Created by Chintan

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For example, if n=2 (maximum value), the output matrix should be
 [1 1 1 1 1;
  1 2 2 2 1;
  1 2 1 2 1;
  1 2 2 2 1;
  1 1 1 1 1]
where you go from inside to outside starting from 1 to 2(maximum value) and again move back from 2 to 1.

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Last Solution submitted on Oct 31, 2025

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3 Comments

Ned Gulley on 24 Apr 2013

You should call this a volcano matrix!

Richard Zapor on 27 Apr 2013

Could also be named an Atoll matrix

Chintan on 27 Apr 2013

Thanks Ned, Richard for good suggestion. I have changed Problem Title accordingly.

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Problem 1448. Create Volcano (or Atoll) martix. It is an extension of Bullseye matrix problem.

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Last 200 Solutions

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Problem 1448. Create Volcano (or Atoll) martix. It is an extension of Bullseye matrix problem.

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers152

Suggested Problems

More from this Author10

Problem Tags

Community Treasure Hunt

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