Coderwriting

Problem Overview

• Determine which student has the highest average grade from records formatted as "[name]: [grade]".
• Input: a list of student grade entries (grades 1–5) with multiple entries per student; each average is unique; output the top-performing student.
• Context: a teacher analyzing class grades to find the best overall performer.
• This Ziprecruiter interviews coding interview problem is a common interview question; reasonable efficiency is sufficient.