University of Toronto -- Department of Computer Science
CSC 108S - Spring 1998
Midterm test (Clarke's section)

Aids allowed: Textbook only.
Time: 50 minutes

Question 1 Solution. [10 marks]
-------------------------------

import java.io.*;
public class A {
   public static void main (String[] args) throws IOException {
      DataInputStream in = new DataInputStream (System.in);

      String mostLine = "";
      int mostCount = 0;
      final String stopper = "XXX";

      String line = in.readLine();
      while (!line.equals(stopper)) {

	 int count = 0;
	 for (int i = 0; i < line.length(); i++)
	    if (line.charAt(i) == 'J')
	       count++;

         if (count > mostCount) {
	    mostCount = count;
	    mostLine = line;
	 }
         line = in.readLine();
      }
      if (mostCount >= 0) // includes the case where "the most J's" is zero J's.
	 System.out.println (mostLine);
      else
	 System.out.println ("No input!");
   }
}

OR HERE IS ANOTHER SOLUTION TO QUESTION 1:
import java.io.*;
public class A {
   public static void main (String[] args) throws IOException {
      DataInputStream in = new DataInputStream (System.in);

      String mostLine = "";
      int mostCount = 0;
      final String stopper = "XXX";

      while (true) {
	 String line = in.readLine();
	 if (line.equals(stopper))
	    break;

	 int count = 0;
	 for (int i = 0; i < line.length(); i++)
	    if (line.charAt(i) == 'J')
	       count++;

         if (count > mostCount) {
	    mostCount = count;
	    mostLine = line;
	 }
      }
      if (mostCount >= 0) // includes the case where "the most J's" is zero J's.
	 System.out.println (mostLine);
      else
	 System.out.println ("No input!");
   }
}

Question 2 Solution. [10 marks]
-------------------------------

import java.io.*;

class Prof {
   private String name;
   private int age;

   public Prof (String name, int age) {
      this.name = name;
      this.age = age;
   }

   public boolean olderThan (Prof otherProf) {
      return age > otherProf.age;

      // You don't need to say "this.age", but it's OK. And you don't need
      // a getAge() method to access the otherProf's age, but it's OK to
      // use one, if you write it.
   }

   public String getName() {
      return name;
   }
}

public class B {
   public static void main (String[] args) throws IOException {
      DataInputStream stdin = new DataInputStream (System.in);
// The previous three lines are not required as part of the test answer.

      // Create the first Prof.
      String name = stdin.readLine();
      int age = Integer.parseInt(stdin.readLine());
      Prof p1 = new Prof(name,age);

      // Create the second Prof.
      name = stdin.readLine();
      age = Integer.parseInt(stdin.readLine());
      Prof p2 = new Prof(name,age);

      // Compare them and print the result.
      if (p1.olderThan(p2))
         System.out.println (p1.getName() + " is older than " + p2.getName());
      else
         System.out.println (p1.getName() + " is older than " + p1.getName());
   }
}