Iterating with Map.entrySet()

In this problem: You will use Map.entrySet() to iterate over all key-value pairs in a HashMap and display the results to standard output.

Learning Objective: Understand efficient map iteration using Map.entrySet()

Overview

entrySet() returns all entries (key-value pairs) as a Set. Use the enhanced for loop to iterate and access each entry's key and value.

Specifications

• Create a LinkedHashMap<String, Integer> (to maintain insertion order)
• Add student names and scores: "Alice"=85, "Bob"=92, "Charlie"=78
• Use entrySet() with enhanced for loop to output all entries as "{name}: {score}"
• Calculate and output the total and average of all scores

Output Format

Alice: 85
Bob: 92
Charlie: 78
Total: 255
Average: 85.0