自动命名文件序列名称

clc;clear;
if ~exist([pwd,'\','data'],'file')
    mkdir([pwd,'\','data']);
end

temp=rand(1,100);
file=dir(['.\data\*.mat']);
fileNum=length(file);
if ~isempty(file)
    fileNameEnd=file(fileNum).name;
    numIdx=isstrprop(fileNameEnd,'digit');
    nameNum=str2num(fileNameEnd(numIdx));%转换成数值
else
    nameNum=0;
    fileNum=0;
end
if nameNum>fileNum
    filename = sprintf('temp%.4i.mat',nameNum+1);
else
    for k = 1:1000
        if ~exist(fullfile('.\data\',sprintf('temp%.4i.mat',k)),'file')
            filename = sprintf('temp%.4i.mat',k);
            break;
        else
            filename = sprintf('temp%.4i.mat',fileNum+1);
            break;
        end
    end
end
save(['.\data\',filename],'temp')