need to find all combination from the expression

All possible combination of chars.

Expression=(l/v-x(1,5)-y-x(1,5)-k/r)

x(1,5) means 1 to 5 x combination

Example:-

x
xx
xxx
xxxx
xxxxx

Final output Example :-

LXYXK
LXYXXK
LAYXXXXK
LAYXXXXXK
LXXYXK
LXXXYXXK
......

Answer 1

[Uttam kumar]

Any better way to do this? Please provide your comments

************************************************************************************ array1=['L';'V'] array2=['A';'A';'A';'A';'A'] array3='Y' array4=['K';'R']

for M=1:length(array4)

for i=1:length(array1) cnt=1 cnt1=1 for j=1:length(array2)*length(array2)

        if cnt > length(array2) 
        if cnt1 < length(array2)
        cnt1=cnt1+1
        end
        cnt=1
        end
       fprintf('%s',array1(i))
      for k=1:cnt1
          fprintf('%s',array2(k))

     end

        fprintf('%s',array3)

      for L=1:cnt
          fprintf('%s',array2(L))

         end
          fprintf('%s\n',array4(M))
         if cnt <= length(array2)
            cnt=cnt+1
          end

         end           

    end
end
************************************************************************
output:-
cnt =  1
cnt1 =  1
LAYAK
cnt =  2
LAYAAK
cnt =  3
LAYAAAK
cnt =  4
LAYAAAAK
cnt =  5
LAYAAAAAK
cnt =  6
cnt1 =  2
cnt =  1
LAAYAK
cnt =  2
LAAYAAK
cnt =  3
LAAYAAAK
cnt =  4
LAAYAAAAK
cnt =  5
LAAYAAAAAK
cnt =  6
cnt1 =  3
.........................

how to hide the 'cnt' and 'cnt1' variable value display in output.

Answer 2

[Uttam kumar]

result={13}; acid={'Ala','Arg','Asp','Asn','Cys','Gln','Glu','Gly','His','Ile','Leu','Lys','Met','Phe','Pro','Ser','Thr','Trp','Tyr','Val'}; %acid={'Ala','Arg','Asp','Asn','Cys'}; %acid=['A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T']; ends={'L','V','K','R'}; lIndex=1;

%function to find the all possible combination

function funcomb(index,result,acid,last,fileID) result(index+1)='Y';

for count2=1:length(acid)

switch (count2)

case 1 for p=1:length(acid) result{index+1+1}=acid{p}; result{index+1+1+1}=last; %fprintf('%s\t',strvcat(result)); fprintf(fileID,'%s',result{:}); fprintf(fileID,"\n");

end

case 2 %fprintf(fileID,"\n"); for p=1:length(acid) result{index+1+1}=acid{p}; for q=1:length(acid) result{index+1+1+1}=acid{q}; result{index+1+1+1+1}=last; %fwrite(fileID,'%s\t',result); fprintf(fileID,'%s',result{:}); fprintf(fileID,"\n"); end end

case 3 %fprintf(fileID,"\n"); for p=1:length(acid) result{index+1+1}=acid{p}; for q=1:length(acid) result{index+1+1+1}=acid{q}; for r=1:length(acid) result{index+1+1+1+1}=acid{r}; result{index+1+1+1+1+1}=last; %fwrite(fileID,'%s\t',result); fprintf(fileID,'%s',result{:}); fprintf(fileID,"\n"); end end end

case 4 %fprintf(fileID,"\n"); for p=1:length(acid) result{index+1+1}=acid{p}; for q=1:length(acid) result{index+1+1+1}=acid{q}; for r=1:length(acid) result{index+1+1+1+1}=acid{r}; for s=1:length(acid) result{index+1+1+1+1+1}=acid{s}; result{index+1+1+1+1+1+1}=last; %fwrite(fileID,'%s\t',result); fprintf(fileID,'%s',result{:}); fprintf(fileID,"\n"); end end end end

case 5 %fprintf(fileID,"\n"); for p=1:length(acid) result{index+1+1}=acid{p}; for q=1:length(acid) result{index+1+1+1}=acid{q}; for r=1:length(acid) result{index+1+1+1+1}=acid{r}; for s=1:length(acid) result{index+1+1+1+1+1}=acid{s}; for t=1:length(acid) result{index+1+1+1+1+1+1}=acid{t}; result{index+1+1+1+1+1+1+1}=last; %fwrite(fileID,'%s\t',result); fprintf(fileID,'%s',result{:}); fprintf(fileID,"\n"); end end end end end end %switch end end

end

% possible combination function end

fileID = fopen('Combfile.txt','wt'); for a=1:2 for z=3:4 last=ends{z};

for y=1:5 result{1}=ends{a}; switch(y)

case 1 for p=1:length(acid) result{lIndex+1}=acid{p}; rIndex=lIndex+1; funcomb(rIndex,result,acid,last,fileID); end

case 2 for p=1:length(acid) result{lIndex+1}=acid{p}; for q=1:length(acid) result{lIndex+1+1}=acid{q}; rIndex=lIndex+1+1; funcomb(rIndex,result,acid,last,fileID); end end

case 3 for p=1:length(acid) result{lIndex+1}=acid{p}; for q=1:length(acid) result{lIndex+1+1}=acid{q}; for r=1:length(acid) result{lIndex+1+1+1}=acid{r}; rIndex=lIndex+1+1+1; funcomb(rIndex,result,acid,last,fileID); end end end

case 4 for p=1:length(acid) result{lIndex+1}=acid{p}; for q=1:length(acid) result{lIndex+1+1}=acid{q}; for r=1:length(acid) result{lIndex+1+1+1}=acid{r}; for s=1:length(acid) result{lIndex+1+1+1+1}=acid{s}; rIndex=lIndex+1+1+1+1; funcomb(rIndex,result,acid,last,fileID); end end end end

case 5 for p=1:length(acid) result{lIndex+1}=acid{p}; for q=1:length(acid) result{lIndex+1+1}=acid{q}; for r=1:length(acid) result{lIndex+1+1+1}=acid{r}; for s=1:length(acid) result{lIndex+1+1+1+1}=acid{s}; for t=1:length(acid) result{lIndex+1+1+1+1+1}=acid{t}; rIndex=lIndex+1+1+1+1+1; funcomb(rIndex,result,acid,last,fileID); end end end end end end % switch end end end end status=fclose(fileID); status

This code is running continuously like never ending .Can anyone suggest me ,how to optimize the number of for loops.

Thanks uttam