The goal of this project is to calculate the average rank for each team and determine the winning team.
There will be two arrays to represent the scores of each team and the number of runners in each team.
If runner[i] is 'A', it means that team A has a runner ranked (i+1).For each character in the outcome string, increment the total score of the correct team by the runner's rank. The number of non-zero scores will be the number of teams.