Unable to perform assignment because the left and right sides have a different number of elements.

Hello,

I am working on a project that converts specific letters in a string to its numrical value.

For example: I want to convert letter 'h' in 'hello' into its numrical value and it should be '104ello' where 104=='h'

here is my code

inputMessage = "any string can be here";
message1 = char(inputMessage); % convert message from string to characters
loweredMessage = lower(message1);%convert the string to lower case
lengthMessage = length(message1); %Get the length of the characters


encodedMess=[];
for i = 1:length(message)
   
    if message(i)=='a'|| message(i)=='e' || message(i)=='i' ||message(i)=='o' || message(i)=='u'
       encodedMess(i) = num2str(double(message(i)));
    else
        encodedMess(i)=message(i)
    end
    
    end 

Answer 1

[Walter Roberson]

You can see that when you convert 'hello' to '104ello' that the output must be larger than the input. However, your code requires that the output be exactly the same as the input. You would try to replace 'a' by '97' but you would try to store that '97' into the single location encodedMess(i)

What you can do is initialize

encodedMess = "";

The output of the loop would then be a non-scalar string array

"97"    "n"    "y"    " "    "s"    "t"    "r"    "105"    "n"    "g"    " "    "c"    "97"    "n"    " "    "b"    "101"    " "    "h"    "101"  "r"

which you could then join together as a single string.

[yaqoub alsarraf]

How would I finally join together as a single string?

[Walter Roberson]

strjoin() is one way.