Subtract Each Row's Mean

mediumnumpy_manipulation

Implement row_demean(X).

Given a 2D array X of shape (m, n), return an array of the same shape where the mean of each row has been subtracted from that row. Vectorize it with broadcasting — no for/while loops.

Constraints

no scipy, sklearn
no for/while loops

Your solution

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Hints

Hint 1

Reduce along axis=1 with keepdims=True so the per-row means broadcast back.