Replacing a string - function strrep:

The function strrep finds all the occurrences of a substring within the string, and substitutes them with a new substring. The order of arguments matters. The format is as sown below:

strrep(string, oldsubstring, newsubstring)

The example below replaces all occurrences of the substring 'e' with the substring 'x':

>> strrep('abcdeabcde','e','x')

ans =

abcdxabcdx

All the strings can be of any length, and the lengths of the old and new substrings do not have to be similar.