Sample with replacement in ruby?

Question

Following this simple but very convenient method to sample from an array without replacement, we can see something like

arr = ["a", "b", "c", "d", "e", "f"]
arr.sample(10)
=> ["b", "a", "d", "f", "e", "c"]

How is same accomplished, but with replacement? So in the example .sample(10) would return an array of length 10 with some duplicate elements?

e.g.

arr = ["a", "b", "c", "d", "e", "f"]
arr.sample(10)
=> ["b", "a", "d", "f", "e", "c", "b", "e", "a", "b"]

Another way: `10.times.map { arr[rand arr.size] } #=> => ["c", "a", "d", "e", "a", "f", "a", "b", "f", "d"] `. — Cary Swoveland, Sep 13 '20 at 23:43

score 3 · Accepted Answer · answered Sep 13 '20 at 12:19

3

take 1 sample 10 times and collect the result:

 10.times.map{arr.sample}

answered Sep 13 '20 at 12:19

steenslag

1 Answers1