Join repeated continuous elements of a vector

1 次查看（过去 30 天）

显示更早的评论

Alexander 2020-2-27

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/507823-join-repeated-continuous-elements-of-a-vector

关闭： MATLAB Answer Bot 2021-8-20

Hi, is there a simple method to join repeated continuous elements of a vector in Matlab?

For example if the input is:

in = [1 1 1 2 2 3 6 6 6 1 1 1 4 4 4 2 2 2 6 4 4]

how can i get

out = [1 2 6 1 4 2 6 4]

Note that since 3 is not repeted, it is not in 'out' vector. Same for the only 6.

thanks !

2 个评论
显示无隐藏无

Walter Roberson 2020-2-27

No, there is no simple method. There are some methods that take a few lines.

Alexander 2020-2-27

Thank you !

请先登录，再回答此问题。

回答（1 个）

Are Mjaavatten 2020-2-27

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/507823-join-repeated-continuous-elements-of-a-vector#answer_417645

in = [1 1 1 2 2 3 6 6 6 1 1 1 4 4 4 2 2 2 6 4 4];
i = 1;
count = 1;
out = [];
a = in(1);
while i < length(in)
  i = i+1;
  if in(i) ~= a
     count = 1;
     a = in(i);
  else
    count = count + 1;
  end
  if count == 2;
     out = [out,a];
  end
end
disp(out)

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Alexander 2020-2-27

Thanks for your time

Your code works just fine !

This one works too:

in = [1 1 1 2 2 3 6 6 6 1 1 1 4 4 4 2 2 2 6 4 4];
BB=diff(find(diff(in)~=0));
in(diff(m)==0) = [];
in(find(BB==1)+1)=[];
out = in;

请先登录，再回答此问题。

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by