Problem 307. First non-zero element in each column
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
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Problem Comments
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2 Comments
Ned Gulley
on 5 Apr 2012
I fixed the test. There was no assert statement.
Dyuman Joshi
on 29 Oct 2021
Test cases have been added.
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