Problem 43673. String Array Basics, Part 4: Convert String Array with Missing Values to Cell Array

Created by Peng Liu

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<a href = "http://www.mathworks.com/help/matlab/characters-and-strings.html">String array</a> and cell array are two types of containers for storing pieces of data. In this problem, you will be given a string array of text data. Your job is to convert the string array to a cell array of character vectors, which stores the same pieces of text data.The <a href = "http://www.mathworks.com/matlabcentral/cody/problems/43672-string-array-basics-part-2-convert-string-array-to-cell-array-no-missing-values">Part 2</a> assuming no missing values in the input string array is a good starting point. In this problem, the missing values for string arrays, denoted &lt; missing &gt;, need to be converted to the missing values for cell arrays, denoted {''} (i.e., cell of empty character).Refer to the R2016b documentation for more information on the <a href = "http://www.mathworks.com/help/matlab/ref/ismissing.html?=ismissing">missing values for different data types</a>.Example:<pre class="language-matlab">Input:
&gt;&gt; x = string({'I','love'}); x(4) = 'MATLAB'
x = 
 1×4 string array
 "I" "love" &lt;missing&gt; "MATLAB"
</pre><pre class="language-matlab">Output:
&gt;&gt; y = {'I', 'love', '', 'MATLAB'}
y =
 1×3 cell array
 'I' 'love' '' 'MATLAB'
</pre>Related Problems in this series:<ul><li><a href = "http://www.mathworks.com/matlabcentral/cody/problems/43677-string-array-basics-part-1-convert-cell-array-to-string-array-no-missing-values">String Array Basics, Part 1: Convert Cell Array to String Array; No Missing Values</a></li><li><a href = "http://www.mathworks.com/matlabcentral/cody/problems/43672-string-array-basics-part-2-convert-string-array-to-cell-array-no-missing-values">String Array Basics, Part 2: Convert String Array to Cell Array; No Missing Values</a></li><li><a href = "http://www.mathworks.com/matlabcentral/cody/problems/43674-string-array-basics-part-3-convert-cell-array-to-string-array-with-missing-values">String Array Basics, Part 3: Convert Cell Array with Missing Values to String Array</a></li><li>String Array Basics, Part 4: Convert String Array with Missing Values to Cell Array</li></ul>

<http://www.mathworks.com/help/matlab/characters-and-strings.html String array> and cell array are two types of containers for storing pieces of data. In this problem, you will be given a string array of text data. Your job is to convert the string array to a cell array of character vectors, which stores the same pieces of text data.

The <http://www.mathworks.com/matlabcentral/cody/problems/43672-string-array-basics-part-2-convert-string-array-to-cell-array-no-missing-values Part 2> assuming no missing values in the input string array is a good starting point. In this problem, the missing values for string arrays, denoted *< missing >*, need to be converted to the missing values for cell arrays, denoted *{''}* (i.e., cell of empty character).

Refer to the R2016b documentation for more information on the <http://www.mathworks.com/help/matlab/ref/ismissing.html?=ismissing missing values for different data types>.
 
Example:

Input:
 >> x = string({'I','love'}); x(4) = 'MATLAB'
 x = 
 1×4 string array
 "I" "love" <missing> "MATLAB"
 
 Output:
 >> y = {'I', 'love', '', 'MATLAB'}
 y =
 1×3 cell array
 'I' 'love' '' 'MATLAB'

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Problem 43673. String Array Basics, Part 4: Convert String Array with Missing Values to Cell Array

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