Lecture Notes on 17 Jun 2016

* Read Chapter 5 on Loops

* Do Tutorial Exercises 5 due Sunday, 19 Jun 2016

* Review Boolean Identities, in particular use truth tables to 
  prove De Morgan's Laws.

* Loops

  // compute the maximum number from the series of numbers
  // entered by the user. 
  // the input is terminated by a entry of any negative number

  import java.util.Scanner;

  Scanner sc = new Scanner (System.in);

  System.out.print ("Enter number: ");
  int num = sc.nextInt();
  int max = num;

  while (num >= 0)
  {
    if (num > max)
    {
      max = num;
    }
    System.out.print ("Enter number: ");
    num = sc.nextInt();
  }

  System.out.println ("Maximum number: " + max);

* Challenge Problems
  
  Modify the above code to do the following problems:
  
  - find the minimum number

  - find the range, that is the difference between maximum and minimum

  - find the average of all the numbers
  
  - find the second highest number (assume that the user enters more than 2 numbers)

  - find the frequency of the maximum number

  - find the length of the longest sequence of numbers that are the same

  - find the largest difference between two adjacent numbers