Problem 43671. Words Count: A Cell Array Approach

Created byPeng Liu

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Given an input character vector consisting of words, punctuation marks, white spaces, and possibly newline characters (\n), arrange the unique words alphabetically in a cell array of character vectors (formerly called <a href = "//www.tatmou.com/help/matlab/matlab_prog/cell-arrays-of-strings.html">cell array of strings</a>) and calculate the histogram count of every unique word.Assumptions:<ol><li>Case is insensitive, e.g., WORDS and words are treated as the same word, and you may return in the output cell array either the uppercase or lowercase.</li><li>Punctuation marks are limited only to comma (,), period (.), colon (:), semi-colon (;), question mark (?), and exclamation mark (!).</li></ol>For example, given the input txt as a character vector,<pre class="language-matlab">txt = 'I love MATLAB and Cody, but I don''t like trivial matlab problems on cody.'; </pre>the outputs should be<pre class="language-matlab">words = {'and';'but';'Cody';'don''t';'I';'like';'love';'MATLAB';... 'on';'problems';'trivial'}; count = [1; 1; 2; 1; 2; 1; 1; 2; 1; 1; 1]; </pre>Hint: The cell array of strings approach is the dual of the string array approach, i.e., things that can be done via the <a href = "//www.tatmou.com/matlabcentral/cody/problems/43670-words-count-a-string-array-approach">string arrays approach</a> can also be done using the cell array approach.Related problems in this series:<ul><li><a href = "//www.tatmou.com/matlabcentral/cody/problems/43670-words-count-a-string-array-approach">Words Count: A String Array Approach</a></li><li>Words Count: A Cell Array Approach</li></ul>

给定一个输入特征向量组成的词s, punctuation marks, white spaces, and possibly newline characters (\n), arrange the unique words alphabetically in a cell array of character vectors (formerly called <//www.tatmou.com/help/matlab/matlab_prog/cell-arrays-of-strings.html cell array of strings>) and calculate the histogram count of every unique word. Assumptions: # Case is insensitive, e.g., WORDS and words are treated as the same word, and you may return in the output cell array either the uppercase or lowercase. # Punctuation marks are limited only to comma (,), period (.), colon (:), semi-colon (;), question mark (?), and exclamation mark (!). For example, given the input txt as a character vector, txt = 'I love MATLAB and Cody, but I don''t like trivial matlab problems on cody.'; the outputs should be words = {'and';'but';'Cody';'don''t';'I';'like';'love';'MATLAB';... 'on';'problems';'trivial'}; count = [1; 1; 2; 1; 2; 1; 1; 2; 1; 1; 1]; Hint: The cell array of strings approach is the dual of the string array approach, i.e., things that can be done via the <//www.tatmou.com/matlabcentral/cody/problems/43670-words-count-a-string-array-approach string arrays approach> can also be done using the cell array approach. Related problems in this series: * <//www.tatmou.com/matlabcentral/cody/problems/43670-words-count-a-string-array-approach Words Count: A String Array Approach> * Words Count: A Cell Array Approach

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Problem 43671. Words Count: A Cell Array Approach

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