Replace character in string/cell with the character above it
조회 수: 1 (최근 30일)
이전 댓글 표시
String/cell example: --> real string/cell is very long
a= { 'a' ; 'b' ; 'c' ; 'b'}
Wanted outcome:
a_new= { 'a' ; 'a' ; 'c' ; 'c'}
댓글 수: 0
채택된 답변
the cyclist
2021년 3월 11일
편집: the cyclist
2021년 3월 11일
The general rule is not perfectly clear to me, from your small example. Do you mean that you want the even-numbered elements to be replaced? If so, then
anew = a;
a(2:2:end) = a(1:2:end-1);
If not, maybe you could explain in a little more detail.
댓글 수: 3
the cyclist
2021년 3월 11일
편집: the cyclist
2021년 3월 11일
Here is one way:
a = { 'a' ; 'b' ; 'c' ; 'b' ; 'h' ; 'g' ; 'b'};
replace_idx = find(strcmp(a,'b'));
a_new = a;
a_new(replace_idx) = a_new(replace_idx-1);
This will not work if 'b' is the first element, so you will need to modify this algorithm in that case. But you haven't given info on what you want to do then.
추가 답변 (1개)
Jan
2021년 3월 11일
편집: Jan
2021년 3월 11일
Maybe:
a_new = a;
a_new(2:2:end) = a(1:2:end);
Or:
index = repelemt(1:2:numel(a), 1, 2):
a_new = a(index)
[EDITED] after your comment: "So every b wil be replaced with the character above it"
index = find(strcmp(a, 'b'));
a(index) = a(index - 1);
What about: {'a'; 'b'; 'b'} or {'b'} or {'b', 'a'}?
참고 항목
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!