On 29-04-2012, at 08:48, sagarnikam123 wrote: > No its not perfectly working see below > >> j<-c(1,1,2,2,3) >> k<-c(2,1,1,1,1) >> j%%k > [1] 1 0 0 0 0 > > problem comes when one of my sequence have 1 Did you try the other solutions that were suggested? Berend