Problem 1998. Bleed non-zeros to the right

What a title! Yet, it says what I mean.

You get a vector, some values and a lot of zeroes. Every zero is replaced by the first non-zero element to its left.

For example, [1 0 0 2 0] becomes [1 1 1 2 2] and [0 0 -12 13 0 i 0 -i 76.54321 0 0] becomes [0 0 -12 13 13 i i -i 76.54321 76.54321 76.54321].

Easy, isn't it?

Regexp, regexprep, regexpi, eval, evalc, evalin, nor inline are allowed this time.

(This problem is related to http://www.mathworks.nl/matlabcentral/cody/problems/1999-bleed-non-zeros-to-the-right-using-regexp-and-that-sort-of-cheatcodess.

Solve

Solution Stats

62.5% Correct | 37.5% Incorrect
Last Solution submitted on Sep 03, 2025

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers41

Suggested Problems

More from this Author31

Problem Tags

vector

Community Treasure Hunt

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

Start Hunting!