1. Endeavor to include a relatively complete,  faithful representation of the lectures.
   
2. A daily summary,  in the form of an abstraction,  of the lecture of the day.
   
3. Both...first do # 2 and then do # 1..
   

For the powerful ideas section:  

Do a David Letterman style ``top 10 list'' of powerful ideas.   Order them according to ``power.''

• Incremental programming is powerful because you do little by little.
  
• Problem decomposition - we use it to write programs.
  
• Parameters - write one method and use it many,  many times.
  
• Variables
  
• Recursion
  

For each ``powerful idea'':

1. Identify it and briefly describe if.
   
2. Briefly say something about why you think it merits being called a powerful idea.
   

For the learning journal:

• Evaluate how the elements of this course fit into or don't fit into your life style.
  
• Discuss aspects of your learning about computer programming in this course...
  
  • What was helpful?
    
  • What was not helpful?
    
  • What were the difficult areas?
    
  • What were the easy areas?
    
  • What was important?
    
  • What was trivial?
    

More array stuff  

Associated with each array is a public variable called length which stores the number of memory celss in the array.  

a.length

 

TASK  

Assume:

• a is an array of integer numbers.
  
• s is an array of Strings.
  
• both have been instantiated.
  

(1) Display all of the values in array a one per line.  

for (int x = 0;  x < a.length;  x + +)   {       IO.println (a [x]);   }

 

OR  

for (int x = 1;  x < = a.length;  x + +)   {       IO.println (a [x-1]);   }

 

(2) Add 10 to each element of array a.  

for (int x = 0;  x < a.length;  x + +)   {       a [x] = a [x] + 10;   }

 

(3) Assign the largest value in array a to the variable mix which must be declared.   Assume a has at least one element.  

int max = a [0];    for (int x = 1;  x < a.length;  x + +)    {        if (a [x] > max)        {          max = a [x];         }

 

(4) Make a copy of array a called the copy c.  

int c [];   c = new int [a.length];   for (int x = 0;  x < a.length;  x + +)   {       c [x] = a [x];   }

 

(5) Swap the first two values in array a.  

DO NOT DO THIS!!!!

a [0] = a [1];     a [1] = a [0];

 

THIS IS THE REAL SOLUTION!!!!  

int temp = a [0];   a [0] = a [1];   a [1] = temp;

 

PROBLEM  

Read several (at least one) positive intergers and display all of the integers which are greater than their average value.  

A solution which features the global procedural application architecture.  

(1) The main method.  

static public void main (String args [])   {       readAndStoreTheNumbers ();       computeTheAverage ();       displayTheNumbersAboveAverage ();   }

 

(2) The ``variables.''  

static private int a [];   static private final int LIMIT = 1000;   static private double average;   static private int nrElements;   static private int number;

 

(3) Refine the methods.  

static private void ReadAndStoreTheNumbers ()   {       a = new int [LIMIT];       nrElements = 0;       number = IO.read_int ();       while (number > 0)       {         a [nrElements] = number;         nrElements = nrElements + 1;         number = IO.read_int ();       }   }