Solutions to CompSci 6 Spring 2008 Test 1
    
1. PART A
A. int
B. one
C. printed: eDu   return value: 4
D. printed: eee   return value: 4
E. in Mystery pos is the location of the first 'e' and pos2 is
the location of the 2nd 'e'. Mystery prints 3 consecutive characters
starting with the first e, and then returns the number of characters
from the second e to the end of the string.
F. "yes" There is no second e, so pos2 will equal -1. It crashes because
substring(-1) does not exist.

1. PART B
A. x and num
B. int
C. 9
D. Mystery2 returns the sum of the numbers less then 6 in the arrayList
E. ArrayList is a class and its type must also be a class. Thus its type
cannot be of type int which is a built-in type, not a class. Integer
is a class representing integers in a class.

2.
public String InsertMiddle(String name, String middle)
{
     int blank = name.indexOf(" ");
     return  name.substring(0,blank) + " " + middle + " "
            + name.substring(blank+1);
}

3.
A. Dorm
B. 1: valid: Keohane
   2: error: myName is private and cannot be referred to
   3: valid: Nelson: the basketball dorm
   4: valid: Blumenhurst: the golf dorm

4.
PART A1
   public Player (String name, int rank, int grade)
   {
      myName = name;
      myRank = rank;
      myGrade = grade;
   }

PART A2      
   // return name of player
   public String getName()
   {
      return myName;
   }
   
   // return rank of player
   public int getRank()
   {
      return myRank;
   }

      
   // return grade of player
   public int getGrade()
   {
      return myGrade;
   }
   // increment grade of player by 1,  do not change grade for grade 13 players
   public void incrementGrade()
   {
      if (myGrade < 13)
         myGrade++;
   }
   // change rank of player to "rank"
   public void setRank(int rank) 
   {
      myRank = rank;
   }

PART B1
   public ChessTournament (Scanner input)
   {
      myPlayers = new ArrayList<Player>();
      
      while (input.hasNext())
      {
         Player temp = new Player(input.next(), input.nextInt(), input.nextInt());
         myPlayers.add(temp);
      }
   }

Part B2
   public int NumberPlayersBetween (int minRank, int maxRank)
   {
      int count = 0;
      for (Player temp: myPlayers)
      {
         int rank = temp.getRank();
         if (rank >= minRank && rank <= maxRank)
         {
            count++;
         }
      }
      return count;
   }

PART B3
   public String highestPlayerInGrade(int grade)
   {
      int maxRank = 0;
      String maxPlayer = "No Player in this grade.";
      for (Player temp: myPlayers)
      {
         int rank = temp.getRank();
         
         if (temp.getGrade() == grade && rank > maxRank)
         {
            maxRank = rank;
            maxPlayer = temp.getName();
         }
      }
      return maxPlayer;
   }

PART B4
         
   public ArrayList<String> PlayersWithRankGreater(int rank)
   {
      ArrayList<String> PlayersWithRank = new ArrayList<String>();
      for (Player temp: myPlayers)
      {
         if (temp.getRank() > rank)
         {
            PlayersWithRank.add(temp.getName());
         }
      }
      return PlayersWithRank;
   }