Arrays.java

package Pair;

import java.util.ArrayList;
import java.util.Collections;

/**
 * In here you must make firstLast, which will return a pair of the first element in the array list and the last
 * element in the arraylist.
 * You must also make a min method that returns the smallest item in the array list
 * A max method that returns the largest item in the arraylist
 * And a minmax method that returns a pair containing the largest and smallest items from the array list
 */
public class Arrays {
    public static <E extends Comparable> Pair<E> firstLast(ArrayList<E> a) {
        Pair pair = new Pair(a.get(0), a.get(a.size()-1));
        return pair;
    }


    public static <E extends Comparable> E min(ArrayList<E> al) {
        Collections.sort(al);
        return al.get(0);
    }

    public static <E extends Comparable> E max(ArrayList<E> al) {
        Collections.sort(al);
        return al.get(al.size()-1);
    }

    public static <E extends Comparable> Pair<E> minMax(ArrayList<E> al) {
        Collections.sort(al);
        return firstLast(al);
    }
}