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

356 Solutions
120 Solvers

Last Solution submitted on Dec 14, 2025

Last 200 Solutions

Problem Comments

4 Comments

4 Comments

Show 1 older comment

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!

henry Liu on 20 Jan 2023

With the process of your coding, you'll find out more and more bugs. This is why I enjoy this problem.

Solution Comments

Show comments

Problem Recent Solvers120

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Problem 579. Spiral In

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers120

Suggested Problems

More from this Author11

Problem Tags

Community Treasure Hunt

Problem 579. Spiral In

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers120

Suggested Problems

More from this Author11

Problem Tags

Community Treasure Hunt

Players