Measurement.java

import java.util.*;

class Person {
    // declare the attributes
    private double _weight, _height;
    private String _name;
    // declare the constructor

    public Person() {
        //initialize all attributes to 0.
    }

    public Person(String aName, int aWeight, int aHeight){
        //initialize all attributes to user-defined values
        _name = aName;
        _weight = aWeight;
        _height = aHeight;
    }

    public double computeBMI() {

        // implement the BMI formula
        return _weight * 10000 / (_height * _height);

    }

}

class Measurement {

    public static void main(String[] args) {
        // declare the necessary variables
        int n, weight, height, tallest, shortest, tallestSlot, shortestSlot;
        String name, shortestPerson, tallestPerson;
        int[] anArray;
        anArray = new int[101];
        // declare a Scanner object to read input
        Scanner myScanner = new Scanner(System.in);


        // read input and process them accordingly
        n = myScanner.nextInt();
        for (int i = 1; i < n; i++){
            name = myScanner.next();
            height = myScanner.nextInt();
            if (i == 1){
                shortest = height;
                tallest = height;
                shortestPerson = name;
                tallestPerson = name;
                shortestSlot = i;
                tallestSlot = i;
            }
            if (height < shortest){
                shortest = height;
                shortestPerson = name;
                shortestSlot = i;
            }
            if (height > tallest){
                tallest = height;
                tallestPerson = name;
                tallestSlot = i;
            }
            weight = myScanner.nextInt();
            anArray[i] = Person.Person(name, weight, height);
        }
        // simulate the problem


        // output the result
        System.out.println(shortestPerson + " is the shortest with BMI equals to " + anArray[shortestSlot].computeBMI() + ".");
        System.out.println(tallestPerson + " is the tallest with BMI equals to " + anArray[tallestSlot].computeBMI() + ".");

    }
}

// line65: cannot find symbol
// line71, 72: int cannot be dereferenced.