How to replace only one instance in a certain string

I am trying to use strrep() to replace the first 'e' with nothing '' and leave the second one alone in the following string:

x = 'e-8.5e-5';
y = strrep(x,'e','');
desired_final_ans = '-8.5e-5';

Is there a way to skip instances in strrep()?

[Stephen23]

Duplicate:

https://www.mathworks.com/matlabcentral/answers/1566546-how-to-strrep-only-certain-strings

Answer 1

[the cyclist]

If you are certain that the first e is the first character of the string, then this will do it:

x = 'e-8.5e-5'

x = 'e-8.5e-5'

y = regexprep(x,'^e','')

y = '-8.5e-5'

The '^' indicates that the regular expression has to start the string.

Answer 2

[Image Analyst]

Here's one way:

eLocations = strfind(x, 'e')
x(eLocations(1)) = [] % Replace first e with null (in other words, delete it).