r - unable to increment count on condition -

the logic code is: each different client(can have more 2 client) has output ==1 index value should increment (3* client),

if output ==2 index value 10
condition not working is
mydf$client[i]!=count in part not able increment count

    mydf <- data.frame(time = c(2,4,3,2,3,3,3,4,4,4,3,2,4,3,2,4,4,2,2),                output = c(1,1,2,2,1,1,1,1,1,2,1,1,1,1,1,2,1,1,1),                client =c(1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2))     mydf$index<-0     count=1     (i in 1:length(mydf))     {      repeat     {     if(mydf$client[i]==count)      {      if(mydf$output[i]==1 )     {     mydf$index[i]<-3*count      }     if(mydf$output[i]==2 )     {     mydf$index[i]<-10      }     }     if(mydf$client[i]!=count )     {      count<-count+1     }     if(mydf$client[i]<3)     {break     }     }      }      time output client index        2     1     1      3        4     1     1      3        3     2     1      10        2     2     1      10        3     1     2      6        3     1     2      6        3     1     2      10        4     1     2      10        4     1     2      6             4     2     2      10         3     1     2      6        2     1     2      6        4     1     2      10        3     1     2      6        2     1     2      6        4     2     2      10        4     1     2      6        2     1     2      6        2     1     2      10 

thanks in advance