Median Imputation

Replace the missing (NaN) entries of a numeric vector with the median of the observed entries.

Implement solve(x).

Returns. Return a new NumPy array; the input is not modified.

Examples

Example 1

Input:

solve([1.0, np.nan, 3.0, 100.0])

Output:

[1.0, 3.0, 3.0, 100.0]

Example 2

Input:

solve([2.0, 4.0, np.nan, 10.0])

Output:

[2.0, 4.0, 4.0, 10.0]