I have a 2D matrix, say A=zeros(10,10). I want to add a vector of number to the matrix. I have the index of the elements, but it is repeated. E.g. the index [5,3,2,5,3,100,5] and the value is some random [1,2,3,4,5,6,7]. I then want to add 1 into 5th element of A, 2 into 3rd element and so on. How do I do this in one line?