solution is incorrect
Not really, we need to determine the first non-zero element in each column, not row.
How to find the position of an element in a vector without using the find function
Project Euler: Problem 1, Multiples of 3 and 5
Is A the inverse of B?
Find the hypotenuse
vectorization in N
Matrix which contains the values of an other matrix A at the given locations.
A quadrant matrix
Remove NaN ?
Create a matrix X, where each column is a shifted copy of the vector v
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