/*
 *  =============================================================
 *  DemoArrays1.java: Demo features of one-dimensional arrays of
 *                    numbers and strings in Java
 *
 *  Note. An array is a structure that holds multiple values of 
 *  the same data type.
 *
 *  Written By: Mark Austin                            April 2008
 *  =============================================================
 */

import java.text.*;

public class DemoArrays1 {

   // Constructor method.

   public DemoArrays1() {};

   // Define NoColums to be a "constant" .... (see use below)

   public final static int NoColumns = 10;

   // main method : this is where the program execution begins.

   public static void main ( String [] args ) {
       int i;

       // [a] Create and populate a one dimensional array of
       //     five integers

       int [] iA  = new int[5];
       for ( i = 0; i <= 4; i = i + 1)
            iA [i] = i;

       // [b] Print contents of iA

       System.out.println("Array: iA");
       for ( i = 0; i <= 4; i = i + 1)
            System.out.println( iA [i] );

       // [c] Retrieve and print the length of iA...

       System.out.println("");
       System.out.println("Length of iA = " + iA.length );

       // [d] Create and initialize a one dimensional array of
       //     twenty floating point nos ....

       float [] fA  = new float[ 45 ];
       for ( i = 0; i < fA.length; i = i + 1)
            fA [i] = (float) i;

       // [e] Print contents of "fA" organized into six columns...


       System.out.println("");
       System.out.println("Array: fA (standard printout)");
       for ( i = 1; i <= fA.length; i = i + 1) {
             System.out.print(" " + fA[i-1] );
             if (i % NoColumns == 0 || i == fA.length ) 
                 System.out.println("");
       }

       // [f] Print contents of "fA" formatted and organized
       //     into six columns...

       DecimalFormat formatOutput = new DecimalFormat ("00.00");

       System.out.println("");
       System.out.println("Array: fA (formatted output)");
       for ( i = 1; i <= fA.length; i = i + 1) {

             // Format and print array element ....

             String output1 = formatOutput.format( fA [i-1] );
             System.out.print(" " + output1 );

             // Print end of line ....

             if (i % NoColumns == 0 || i == fA.length ) 
                 System.out.println("");
       }

       // [g] Create, initialize, and print an array of Strings

       String [] saNames = { "Coronet Peak",
                                 "Heavenly",
                                     "Vail",
                       "Whistler/Blackcomb" };

       System.out.println("");
       System.out.println("Length of saNames = " + saNames.length );

       System.out.println("");
       System.out.println("Array: saNames");
       for ( i = 0; i < saNames.length; i = i + 1)
            System.out.println( saNames [i] );

   }
}