From A = [5,2,3] and B = [1,2,3,4,5,6,7,8,9,10] produce a vector C where :
C(1) is the sum of the first A(1) elements of B,
C(2) is the sum of the next A(2) elements of B, etc.
c(i) = 0 if A(i) = 0.
out-> [15 13 27];
Remove any row in which a NaN appears
Duplicate each element of a vector.
Simple equation: Annual salary
07 - Common functions and indexing 6
vectorization in N
Matrix with different incremental runs
First non-zero element in each column
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