Stefan Evert
2021-Jun-05 07:51 UTC
[R] Beginner problem - using mod function to print odd numbers
> > I don't understand. -- > > 7%%2=1 > 9%%2=1 > 11%%2=1 > > What aren't these numbers printing ? > > num<-0 > for (i in 1:100){ > num<-num+i > if (num%%2 != 0) > print(num) > }Your code tests the numbers 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, ? and correctly prints the odd ones among them. But I suppose that's not what you wanted to do?
William Michels
2021-Jun-05 18:04 UTC
[R] Beginner problem - using mod function to print odd numbers
> i <- 1L; span <- 1:100; result <- NA; > for (i in span){+ ifelse(i %% 2 != 0, result[i] <- TRUE, result[i] <- FALSE) + }> span[result][1] 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 [30] 59 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 95 97 99>HTH, Bill. W. Michels, Ph.D. On Sat, Jun 5, 2021 at 12:55 AM Stefan Evert <stefanML at collocations.de> wrote:> > > > > I don't understand. -- > > > > 7%%2=1 > > 9%%2=1 > > 11%%2=1 > > > > What aren't these numbers printing ? > > > > num<-0 > > for (i in 1:100){ > > num<-num+i > > if (num%%2 != 0) > > print(num) > > } > > Your code tests the numbers > > 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, ? > > and correctly prints the odd ones among them. > > But I suppose that's not what you wanted to do? > > ______________________________________________ > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code.