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 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 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'

Related Problems in this series:

• String Array Basics, Part 1: Convert Cell Array to String Array; No Missing Values
• String Array Basics, Part 2: Convert String Array to Cell Array; No Missing Values
• String Array Basics, Part 3: Convert Cell Array with Missing Values to String Array
• String Array Basics, Part 4: Convert String Array with Missing Values to Cell Array