For a given matrix, calculate the index of the first non-zero element in each column. Assuming a column with all elements zero is not permitted.
Example:
in->x = [0 1 0 0;
4 3 7 0;
0 0 2 6;
0 9 0 5];
out->i = [2 1 2 3]; % row numbers
Solve

Solution Stats

2434 Solutions

966 Solvers

Last Solution submitted on Aug 26, 2026

Last 200 Solutions

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers966

Yiming Samuel Vinci 静安

Suggested Problems

More from this Author10

Problem Tags

Community Treasure Hunt

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

Start Hunting!