aparler/RosettaCodeData
1
0
Fork 0
Code Issues 12 Pull requests 3 Projects Releases Packages Wiki Activity Actions

Data commit

Browse source
This commit is contained in:
Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
199093 changed files with 3378972 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

11
Task/Perfect-numbers/R/perfect-numbers.r Normal file
View file

@ -0,0 +1,11 @@
is.perf <- function(n){
if (n==0|n==1) return(FALSE)
s <- seq (1,n-1)
x <- n %% s
m <- data.frame(s,x)
out <- with(m, s[x==0])
return(sum(out)==n)
}
# Usage - Warning High Memory Usage
is.perf(28)
sapply(c(6,28,496,8128,33550336),is.perf)