22. Subtract the Row Mean

Medium

Given a DataFrame of numeric values, subtract the row mean from each element in that row. Return the result.

Input

      0     1     2
0   0.0   1.0   2.0
1   3.0   4.0   5.0
2   6.0   7.0   8.0
3   9.0  10.0  11.0
4  12.0  13.0  14.0

Output

     0    1    2
0 -1.0  0.0  1.0
1 -1.0  0.0  1.0
2 -1.0  0.0  1.0
3 -1.0  0.0  1.0
4 -1.0  0.0  1.0

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