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

MathWorks Cody Team

3K solvers

18 likes

Solve

Solve Later

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

6472 Solutions

3069 Solvers

Last Solution submitted on May 22, 2026

Last 200 Solutions

Problem Comments

1 Comment

Richard Zapor on 29 Apr 2012

The problem does not limit the array to a single row. Add a few cases of multiple rows or define as single row.

Solution Comments

Show comments

Problem Recent Solvers3069

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!