Repeat Each Element

easynumpy_combine

Implement repeat_each(x, k).

Given a 1D array x and an integer k, return a 1D array in which each element of x is repeated k times consecutively. For example repeat_each([1, 2, 3], 2) → [1, 1, 2, 2, 3, 3] (not [1, 2, 3, 1, 2, 3]). No for/while loops.

Constraints

no for/while loops

Your solution

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Hints

Hint 1

np.repeat(x, k) repeats each element k times; contrast with np.tile, which repeats the whole array.