如何重复列表中的元素n次？

Question

How do I repeat each element of a list n times and form a new list? For example:

x=[1,2,3,4]
n=3

Looking for:

[1,1,1,2,2,2,3,3,3,4,4,4]

Answer 1

repeat的inner论点是我一直在寻找的：

repeat([1, 2, 3, 4], inner = 3)

Answer 2

Also list comprehension:

x = [1,2,3,4]
n = 3
result = [i for i in x for j in 1:n]