how can I remove 4 character of a string?

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sara adam
sara adam 2018-11-20
评论： Jan 2021-8-30
for example string is LASTNAME ,output=NAME

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回答（2 个）

KALYAN ACHARJYA
KALYAN ACHARJYA 2018-11-20
编辑：KALYAN ACHARJYA 2018-11-20
s='lastname';
modified_s=s(5:end);
%Command Window
>> s='lastname'
>> modified_s=s(5:end)
s=lastname
modified_s=name
  1 个评论
Jan
Jan 2018-11-20
s(5:end) can be interpreted as: Keep the last part. This is the same as removing the leading 4 characters:
s = 'lastname';
s(1:4) = [];

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John Cunningham
John Cunningham 2021-8-26
If s needs to be a string, just convert to character, grab the indices you need, then convert back to string.
K>> s = "lastname";
K>> s = char(s);
K>> s = string(s(5:end))
s =
"name"
  2 个评论
Stephen23
Stephen23 2021-8-27
编辑：Stephen23 2021-8-27
Ran in:
Simpler and more efficient to use indexing to access the character vector that is already inside the string container:
s = "lastname";
s{1} = s{1}(5:end)
s = "name"
No CHAR call, no STRING call required.

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