Question

2) Write a function stringManip that takes in a character string and returns a character string following these rules: a) any vowel (a, e, i, o, u) is replaced by the character '&' b) any numeric character has 1 added to it (if it was 9, it becomes O instead) (str2num() is useful here) c) all lowercase characters become uppercase d) replace the final character with '!' e) append the length of the string before this step to the end (num2 str() is useful here) The built-in Matlab functions upper() and lower() can be useful. Your output file should contain the first three example checks (a, b, and c), as well as a fourth vector of your choosing. Test inputs: a) stringManip('thisisatest") ans = 'TH&S&S&T&S!11 b) stringManip('This is a test.")

Answer 1

% Matlab file - stringManip.m

% Matlab function that takes in a character string and modifies it and

% return it

function [modString] = stringManip(inString)

    modString = inString;

    % loop through all the characters in the string

    for i=1:length(inString)

        % if string contains a vowel

        if(lower(inString(i))=='a' || lower(inString(i)) =='e' || lower(inString(i)) == 'i' || lower(inString(i)) =='o' || lower(inString(i)) == 'u')

            modString(i)='&';

        else

            [n,OK]=str2num(inString(i)); % if string contains a number then n will conatin that number else it will be empty

            if(~isempty(n))

                n = n+1;

                if(n == 10)

                    n=0;

                end

                modString(i) = num2str(n);

            end

        end

        modString(i) = upper(modString(i));

    end

    modString(length(modString)) ='!'; % replace final charcater by !

    modString = strcat(modString,num2str(length(modString))); % concatenate the length of the string at the end

end

% End of Matlab function

Output:

>> stringManip('thisisatest') ans = THESES&T&S! 11 >> stringManip (This is a test.') ans = THES ES & TEST! 15

Note: Could you please consider my effort on this work and give me a UPVOTE. Thank you :)