print(sample(1:3))
print(sample(1:3, size=3, replace=FALSE))  # same as previous line
print(sample(c(2,5,3), size=4, replace=TRUE))
print(sample(1:2, size=10, prob=c(1,3), replace=TRUE))

print(sample(c(2,5,3), size=3, replace=FALSE))
print(sample(c(2,5,3), size=3, replace=TRUE))

barplot(table(sample(1:3, size=1000, replace=TRUE, prob=c(.30,.60,.10))))

install.packages("plyr") 
library(plyr)
ds <- matrix(c(sample(1:3,6,replace=T),sample(4:6,6,replace=T)),ncol=2)
#ds is the generated dataset, your data would go here
apply(ds,2,count)

# [[1]]
# x freq
# 1 1    1
# 2 2    3
# 3 3    2
# [[2]]
# x freq
# 1 4    1
# 2 5    1
# 3 6    4