Problem 73. Replace NaNs with the number that appears to its left in the row.

Replace NaNs with the number that appears to its left in the row.

If there are more than one consecutive NaNs, they should all be replaced by the first non-NaN value to the immediate left of the left-most NaN. If the NaN is in the first column, default to zero.

For example, if

x = [NaN  1   2  NaN NaN 17  3  -4 NaN]

then

y = [ 0   1   2   2   2  17  3  -4  -4]
Solve

Solution Stats

52.58% Correct | 47.42% Incorrect
Last Solution submitted on Apr 29, 2025

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