Java again please help me

Question

Statistics from a list
CODE
import java.io.*;
import java.util.*;
public class Ex1qu206 {
   public static int min(List l) {
   List mylist = new LinkedList ();
   ListIterator itr = l.listIterator();
   while (itr.hasNext()) {
       Object i = itr.next();
       Integer k = (Integer) i;
       int h = k.intValue();
       Integer j = new Integer(h == 0);
       mylist.add(j);
   return mylist;
   public static double average(List l) {
   List mylist = new LinkedList ();
   ListIterator itr = l.listIterator();
   while (itr.hasNext()) {
       Object i = itr.next();
       Integer k = (Integer) i;
       int h = k.intValue();
       Integer j = new Integer(h * l);
       mylist.add(j);
   return mylist;
  public static void main(String[] args) throws IOException {
   List mylist = new LinkedList();
   BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
   System.out.println("Enter a list of integers, separated by a space, all on one line");
   String S = in.readLine();
   StringTokenizer T = new StringTokenizer (S);
   while (T.hasMoreTokens()) {
       mylist.add(new Integer(Integer.parseInt(T.nextToken())));
   System.out.println("Smallest number is " + min(mylist));
   System.out.println("Average is " + average(mylist));
} // Ex1qu1 Merging lists
CODE 
import java.io.*;
import java.util.*;
public class Merge06 {
public static List merge (List l1, List l2) {
     //Fill in code here
public static void main(String[] args) throws IOException {
   List mylist = new LinkedList ();
   List mylist2 = new LinkedList ();
   BufferedReader in =  new BufferedReader(new InputStreamReader(System.in));
   System.out.println("Enter a list of characters, all on one line, separated by spaces");
   String S = in.readLine();
   StringTokenizer T = new StringTokenizer (S);
   while (T.hasMoreTokens()) {
   mylist.add(new Character((T.nextToken()).charAt(0)));
   System.out.println("Enter another list of characters, all on one line");
   S = in.readLine();
   T = new StringTokenizer (S);
   while (T.hasMoreTokens()) {
   mylist2.add(new Character((T.nextToken()).charAt(0)));
   Collections.sort(mylist);
   Collections.sort(mylist2);
   System.out.println(merge(mylist, mylist2));
} // Merge Merge sort
CODE
import java.io.*;
import java.util.*;
public class MSort06 {
static List  take (List l, int n) {
   List tmp = new LinkedList ();
   ListIterator itr = l.listIterator();
   for (int i = 1; i <= n && itr.hasNext(); i++) {
     tmp.add(itr.next());
   return tmp;
static List drop (List l, int n) {
   List tmp = new LinkedList ();
   ListIterator itr = l.listIterator();
   while (itr.hasNext()) {
     tmp.add(itr.next());
   for (int i = 1; i <= n && ! tmp.isEmpty(); i++) {
     tmp.remove(0);
   return tmp;
static List merge (List l1, List l2) {
     //Fill in code here
public static void msort (List l) {
     //Fill in code here
public static void main(String[] args) throws IOException {
   List mylist = new LinkedList ();
   System.out.println("Enter a list of characters, all on one line, separated by spaces");
   BufferedReader in =  new BufferedReader(new InputStreamReader(System.in));
   String S = in.readLine();
   StringTokenizer T = new StringTokenizer (S);
   while (T.hasMoreTokens()) {
   mylist.add(new Character((T.nextToken()).charAt(0)));
   msort(mylist);
   System.out.println(mylist);
} // MSort06 i am trying to write the codes which are empty above but it dont work. Please check my program for me.
Thanks in advance 

Answer 1

complete the methods so that they satisfy the pre- and post- conditions shown below.
   *Method : min
   *Pre : l is not null, and all the objects in it are Integer
   *Post : the smallest integer value is returned.
    public static int min(List l) {
     //Fill in code here
   *Method : average
   *Pre : l is not null, and all the objects in it are Integer
   *Post : the average of the integer values is returned.
    public static double average(List l) {
     //Fill in code here
    }thats the Ex1qu206.java
a sample run might be:
Enter a list of characters, all on one line, separated by spaces
a n d y
Enter another list of characters, all on one line
g e o r g e
[a, d, e, e, g, g, n, o, r, y]
this is for Merge06.java.
       *Method : msort
       *Pre : l is a list of Comparable objects
       *Post : l has been sorted into ascending order
       */this is the MSort06.java
i hope that helps