How to Replicate List Elements Multiplied Times?

Replicating List Elements Multiplied Times

The quest for a straightforward method to reiterate elements within a list several times often arises. This question aims to find an elegant solution similar to the following example:

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

x1 = [1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4]

Approaches like using x * n fall short, while for loops become cumbersome.

numpy to the Rescue

The optimal approach lies in utilizing NumPy's repeat function:

<code class="python">import numpy as np

x1 = [1, 2, 3, 4]

print(np.repeat(x1, 3))
# Output:
# [1 1 1 2 2 2 3 3 3 4 4 4]</code>

This method effectively replicates each element in the original list x the specified number of times, n. Its简洁 and efficiency make it the ideal choice for this task.

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