ArrayList Worksheet #3

package com.company;

import java.util.ArrayList;

public class Main {

    public static void main(String[] args) {
        // write your code here

    }

    public static int addLenghtsExceptS(ArrayList<String> list)
    {
        int length = 0;
        for (int i = 0; i < list.size(); i++)
        {
            if (!list.get(i).startsWith("s"))
            {
                length += list.get(i).length();
            }
        }
    }

    public static String findMin(ArrayList<Person> list) {
        Person youngestPerson = new Person("Jim". 0);
        //Assuming this object has a public constructor for this solution.
        //If the object does not, a different solution can be found below.


        for (int i = 0; i < list.size(); i++)
        {
            if (list.get(i).getAge() < youngestPerson.getAge())
            {
                //Reference type. Pointer to the original object created in the list.
                youngestPerson = list.get(i);
            }
        }
        return youngestPerson.getName();
    }


    public static String findMin(ArrayList<Person> list) {
        int youngestAge;
        int youngestName;
        //Assuming this object has a public constructor for this solution.
        //If the object does not, a different solution can be found below.


        for (int i = 0; i < list.size(); i++)
        {
            if (list.get(i).getAge() < youngestAge)
            {
                //Reference type. Pointer to the original object created in the list.
                youngestAge = list.get(i).getAge();
                youngestName = list.get(i).getName();
            }
        }
        return youngestName;
    }

    public static void removeFirstLettersAndInsertFun(ArrayList<String> list)
    {
        for(int i = 0; i < list.size(); i++)
        {
            list.set(i, list.get(i).substring(1));
        }
        //Arraylist has a generic override of the add() method that permits specifying an index.
        //Subtract 2 because the list indicies start at zero, and you also want the second to last element.
        list.add(list.size() - 2,"fun");
    }

}