I have to create a vector which contains 200 times a random sample of 20 numbers (always number 1 to 20 but in a random order). I tried to do this with a for loop and with sample(20) but it did not work. can someone help me?

CodePudding user response：

We can use replicate sample

replicate(200, sample(20))

which works in an easy way than for loops

CodePudding user response：

You can try this:

unlist(lapply(1:200, function(x) sample(1:20)))

or

c(sapply(1:200,\(x) sample(1:20)))

The result is 4000 elements long, which I think is what you want (200 consecutive samples of 1:20)