delete an element in char array without deleting the duplicated elements before it
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if I have a char array ex: 'drinking tea' and I padded this string with 'ab' till its size becomes 16 but now when I want to delete the padded characters the 'a' at the end also deleted how can I delete the padded elements without affecting the original string
回答（2 个）
Star Strider
2017-11-11
One approach:
str = 'drinking tea';
stra = [str 'ab' 'ab'];
idx = strfind(stra, 'ab');
recovered_str = stra(1:idx(1)-1)
5 个评论
mia saam
2017-11-11
Star Strider
2017-11-11
When I ran this code:
str = 'drinking tea';
stra = [str 'ab' 'ab' 'a'];
idx = strfind(stra, 'ab');
recovered_str = stra(1:idx(1)-1)
my code still worked correctly.
mia saam
2017-11-11
编辑：per isakson
2017-11-11
Star Strider
2017-11-11
I am simply addressing the Question you posed. I cannot guarantee that my code is robust to all problems.
I will delete my Answer in a few hours.
mia saam
2017-11-11
Walter Roberson
2017-11-11
0 个投票
No, this is not possible to do without information about the intended size of each of the strings. As long as you pad with a pattern that is also valid potential input, you are going to run into problems if the valid input happens to end with that pattern. If you pad with 'ab' pairs then run into problems with (for example) 'nice grab' .
To get around this you either need to keep track of the length of each string, or you need to pad with something that is defined as not being valid input. For example you might be able to get away with padding with char(65535)
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