Programming Homework Help

We want to create two histograms for all the papers written by the author ○ First histogram for the papers written in every year by that author, and second histogram for the number of papers from that author published by a given publisher. A histogram can be created as a two-column table where the first column shows the publisher names (for example) and the second column shows the quantity of papers published by that publisher (see the next page of the PDF).

We have done most of it but need someone help to do the search system.