Recap: Mission Leaderboard

Combine linear search, frequency dictionary, bubble sort, and selection sort

Mission: Mission Leaderboard

Every time a crew member completes a mission, their name is logged in a list named results. Each appearance counts as one win. Mission Control wants a ranked leaderboard.

Pull together everything from this chapter:

1. Build a frequency dictionary counting wins per crew member.
2. Scan the dictionary (linear search) to find the crew member with the most wins, and print Champion: then the name and win count, like Champion: Tommy (4 wins).
3. Build a list of (wins, name) tuples, then sort it from most wins to fewest using selection sort (find the max each pass, swap it to the front).
4. Print === LEADERBOARD ===, then each crew member on its own line as rank. name - count wins (for example, 1. Tommy - 4 wins).

Output

Champion: Tommy (4 wins)
=== LEADERBOARD ===
1. Tommy - 4 wins
2. Boris - 3 wins
3. Cara - 2 wins
4. Rex - 1 wins