I need to be able to solve the following problem without arrays or sum product solution. Would be grateful to anyone that can help.
If have a set of data with columns:
1 3 5 2 1 5 2 3
And rows:
Dog
Cat
Fish
Dog
Dog
Cat
and there is data in each cell in this matrix.
I need to sum the values where the column and row values match (i.e. sum all values where column = 1 and row = dog).
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