Extend a string within a for loop by values from switch case

This switch case works in c. With each pass, the loop finds a letter and assigns it to a binary sequence. The nice thing is, each new binary sequence is simply added (by: +=) to an existing string. Does this also work in matlab?

  for (int i = 0; i < sizeInput; i++) {
      switch (inputText[i]) {
        case ' ': 
        outputText+= "00000";  
        break;
        case 'A': 
        outputText+= "00001";  
        break;
        case 'B': 
        outputText+= "00010";  
        break;
        }
    }

For example the inputText is: AB BA, the result should look like: 0000100010000000001000001

I hope you can help me with this.

Answer 1

[Dyuman Joshi]

No, MATLAB doesn't support Augmented addition, (using +=)

However, you can obtain the same result with a variable, x=x+1; and use dec2bin(x).

If you add strings together in MATLAB, it will give a double (default MATLAB numeric format) output corresponding to the ASCII codes.

You can join strings using join(), or horzcat() (you can also use [ ] to concatenate strings, ['a' 'b'] = 'ab')

[Christian]

Thanks a lot, I did not know that!

Answer 2

[Stephen23]

Forget about C.

The MATLAB approach is to work with vectors and matrices (which is where the name MATLAB comes from):

inp = 'AB BA';
vec = ' AB';
rpl = ["00000","00001","00010"];
[X,Y] = ismember(inp,vec);
out = join(rpl(Y(X)),'') % string scalar

out = "0000100010000000001000001"

out = [rpl{Y(X)}] % char vector

out = '0000100010000000001000001'