Create script for Google Sheet spreadsheet

I have a google sheet that records shipment dates to various locations. Each location is identified with a code (i.e., VN934). Many of these locations have multiple shipments. I need to pull out the rows of each code with the most recent shipment date. For example, the sheet may have: VN934 3/8/2016 VN934 7/5/2017 VN935 6/7/2016 In this example, I need row2 (most recent date) and row3 to be copied to another sheet. The destination sheet will then be a list of all unique codes + the rest of the data from the corresponding cells in each copied row.