Thread Subject: Good way to compare two cell arrays???

Hello,

Your advice is needed to help figure out an eloquent solution to compare two cell arrays (that contain strings). The first cell array (files) needs to be shrunk down whenever it exists in the second array (finishedfiles). The final shrunken down array is called newfiles. Is there a better way to do this???

count2= 0;
        for i = 1:numel(files)
            
            count = 0;
            for j = 1:numel(finishedfiles)
                if strcmp(files{i},finishedfiles{j})
                    count=1;
                    break;
                end
            end
            
            if count == 0;
                count2 = count2+1;
                newfiles{count2} = files{i};
            end
            
        end

On Sep 3, 9:49 am, "Darin " <dmc...@mail.bradley.edu> wrote:
> Hello,
>
> Your advice is needed to help figure out an eloquent solution to compare two cell arrays (that contain strings). The first cell array (files) needs to be shrunk down whenever it exists in the second array (finishedfiles). The final shrunken down array is called newfiles. Is there a better way to do this???
>
> count2= 0;
>         for i = 1:numel(files)
>
>             count = 0;
>             for j = 1:numel(finishedfiles)
>                 if strcmp(files{i},finishedfiles{j})
>                     count=1;
>                     break;
>                 end
>             end
>
>             if count == 0;
>                 count2 = count2+1;
>                 newfiles{count2} = files{i};
>             end
>
>         end

help intersect

"Darin " <dmccoy@mail.bradley.edu> wrote in message <i5p64g$nsl$1@fred.mathworks.com>...
> Hello,
>
> Your advice is needed to help figure out an eloquent solution to compare two cell arrays (that contain strings). The first cell array (files) needs to be shrunk down whenever it exists in the second array (finishedfiles). The final shrunken down array is called newfiles. Is there a better way to do this???
>
> count2= 0;
> for i = 1:numel(files)
>
> count = 0;
> for j = 1:numel(finishedfiles)
> if strcmp(files{i},finishedfiles{j})
> count=1;
> break;
> end
> end
>
> if count == 0;
> count2 = count2+1;
> newfiles{count2} = files{i};
> end
>
> end

not 100% sure, but i think this should do what you want

clc
clear all

files={'file1';'file2';'file3'};
finishedfiles={'file3';'file2'};

a=repmat(files,size(finishedfiles));
b=sort(repmat(finishedfiles,size(files)));

c=(strcmp(a,b));

d=reshape(c,size(files,1),size(c,1)/size(files,1));

newfiles=files(~logical(sum(d,2)))

Roland

Thanks! Turns out i could compress those 14 lines into 1 line.....

files = setdiff(files,finishedfiles);

good times :)

TideMan <mulgor@gmail.com> wrote in message <0da82bc4-f051-44cf-8789-840a4bb3ba6a@x18g2000pro.googlegroups.com>...
> On Sep 3, 9:49 am, "Darin " <dmc...@mail.bradley.edu> wrote:
> > Hello,
> >
> > Your advice is needed to help figure out an eloquent solution to compare two cell arrays (that contain strings). The first cell array (files) needs to be shrunk down whenever it exists in the second array (finishedfiles). The final shrunken down array is called newfiles. Is there a better way to do this???
> >
> > count2= 0;
> >         for i = 1:numel(files)
> >
> >             count = 0;
> >             for j = 1:numel(finishedfiles)
> >                 if strcmp(files{i},finishedfiles{j})
> >                     count=1;
> >                     break;
> >                 end
> >             end
> >
> >             if count == 0;
> >                 count2 = count2+1;
> >                 newfiles{count2} = files{i};
> >             end
> >
> >         end
>
> help intersect