A very large collection of inventory (consider an ArrayList in Java) has the barcodes and descriptions of carpenter tools of various types. The types are numbered from 1 to 100. Implement a parallel algorithm which will select the barcodes of 3 items of type 1, 5 items of type 7 and 8 items of type 10.

I have no idea how to code this at all, so I am asking for help as I could use it as a guideline in the future for my class.