Population count: Difference between revisions
Added R.
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=={{header|R}}==
By default, R does not support 64-bit integer types. We therefore need the bit64 library and an awkward popCount function in order to make this work. Aside from the ugly one-liner that is the popCount function, the rest is trivial.
<lang R>library(bit64)
popCount <- function(x) sum(as.numeric(strsplit(as.bitstring(as.integer64(x)), "")[[1]]))
finder <- function()
{
odious <- evil <- integer(0)
x <- odiousLength <- evilLength <- 0
while(evilLength + odiousLength != 60)#We could be smarter, but this condition suffices.
{
if(popCount(x) %% 2 == 0) evil[evilLength + 1] <- x else odious[odiousLength + 1] <- x
x <- x + 1
evilLength <- length(evil)
odiousLength <- length(odious)
}
cat("The pop count of the 1st 30 powers of 3 are:", sapply(3^(0:29), popCount), "\n")
cat("The first 30 evil numbers are:", evil, "\n")
cat("The first 30 odious numbers are:", odious)
}
finder()</lang>
{{out}}
<pre>The pop count of the 1st 30 powers of 3 are: 1 2 2 4 3 6 6 5 6 8 9 13 10 11 14 15 11 14 14 17 17 20 19 22 16 18 24 30 25 25
The first 30 evil numbers are: 0 3 5 6 9 10 12 15 17 18 20 23 24 27 29 30 33 34 36 39 40 43 45 46 48 51 53 54 57 58
The first 30 odious numbers are: 1 2 4 7 8 11 13 14 16 19 21 22 25 26 28 31 32 35 37 38 41 42 44 47 49 50 52 55 56 59</pre>
=={{header|Racket}}==
<lang racket>#lang racket
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