Metrics.java

import java.util.Scanner;
import java.util.ArrayList;

public class Metrics {
    public static void main(String[] args) {
        ArrayList<Integer> hieghtInInches = new ArrayList<Integer>();
        ArrayList<Integer> weightInPounds = new ArrayList<Integer>();
        String request = "Please add height(in inches) and weight(in pounds) for each " +
                         "person seperated by a colon. When you are done enter the letter Q.";
        System.out.println(request);
        Scanner sc = new Scanner(System.in);

        while (sc.hasNext()) {
            String metrics = sc.next();

            if (metrics.contains("Q")) {
                break;
            }

            if(!metrics.contains(":")){
                System.out.println("Please make sure the height and weight are separated by a colon.");
                System.out.println("Please reenter the height and weight");
                continue;
            }

            String[] metricsList = metrics.split(":");
            hieghtInInches.add(Integer.parseInt(metricsList[0]));
            weightInPounds.add(Integer.parseInt(metricsList[1]));

            System.out.println("Please add the next height and weight unless you are done, in which case enter a Q.");
        }

        int sumOfHeight = 0;
        for (int num : hieghtInInches) {
            sumOfHeight += num;
        }

        int averageHeight = sumOfHeight/hieghtInInches.size();

        int maxWieght = 0;
        for(int num: weightInPounds){
            if(num > maxWieght){
                maxWieght = num;
            }
        }

        System.out.println(
            String.format(
                    "The average height in inches is %d and the max weight in pounds is %d.", averageHeight, maxWieght
            )
        );
    }
}