Problem 1078. Make a diamond

Created by Amin Bashi

Solve Later

Given n, odd number > 1, return n by n matrix consist of "null" and "*" characters arranged like a diamond.

No toolbox functions please.

n = 3

m =

 *
* *
 *

n = 7

m =

   *   
  * *  
 *   *  
*     *
 *   *  
  * *
   *

Solve

Solution Stats

Last solution submitted on Jun 06, 2019

Last 200 Solutions

Problem Comments

2 Comments

2 Comments

@bmtran (Bryant Tran) on 1 Dec 2012

may I suggest reinforcing your test suite using isequal or strcmp to hardcoded diamond strings?

Amin Bashi on 1 Dec 2012

updated!

Solution Comments

Solution 1580849

1 Comment

1 Comment

Radha Kumari on 11 Jul 2018

why is the first test showing error while others passing :
assert(all(find(double(make_diamond(3)) == 0) == [1 3 5 7 9]') == 1)

Matrix dimensions must agree. Error in Test1 (line 4) assert(all(find(double(make_diamond(3)) == 0) == [1 3 5 7 9]') == 1)
what is this supposed to mean? Am I missing something?

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Problem Tags

matlab matrix