Problem 579. Spiral In

Created by Nicholas Howe

Solve Later

Create an m by n matrix filled with sequential integers starting from 1 and arranged in a counterclockwise spiral that hugs the outside border and begins in the upper left corner.

For example:

>> spiralIn(4,5)
ans =
   1    14    13    12    11
   2    15    20    19    10
   3    16    17    18     9
   4     5     6     7     8

Solve

Solution Stats

192 Solutions
67 Solvers

Last Solution submitted on Jun 23, 2020

Last 200 Solutions

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3 Comments

3 Comments

Richard Zapor on 11 May 2012

Tag "Recursion" would help in problem type classification

Ned Gulley on 11 May 2012

Richard, you can add tags whenever you want. Just click on "Add Tags".

Nicholas Howe on 17 May 2012

Good suggestion, although not all solutions proposed have been recursive. Thanks!

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matrix spiral recursion

Problem 579. Spiral In

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Last 200 Solutions

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Problem Recent Solvers67

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Problem 579. Spiral In

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Last 200 Solutions

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Problem Recent Solvers67

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