How to replace only one instance in a certain string
显示 更早的评论
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()?
采纳的回答
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'
y = regexprep(x,'^e','')
The '^' indicates that the regular expression has to start the string.
更多回答（1 个）
Image Analyst
2021-10-18
Here's one way:
eLocations = strfind(x, 'e')
x(eLocations(1)) = [] % Replace first e with null (in other words, delete it).
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