gtools functions

what is the purpose of set.seed() and what does it mean. Can someone please explain with an example.

set.seed() allows the selection of random numbers to be reproducible.


set.seed(123) # use any integer
runif(5) # 5 random numbers
runif(5) # different 5 random numbers
runif(5) # another different 5 random numbers

set.seed(123) # reset the seed
runif(5) # the original 5 random numbers

set.seed(321) # different seed
runif(5) # different random numbers

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