/**
 *  Name: Erica Eddy
 *  Course: CSCI 241 - Computer Science I
 *  Section: 001 or 002
 *  Assignment: 1
 *  
 *  This example shows how results can differ greatly if a loop is nested
 *  inside another.  'for' loops are used here, but an equivalent while loop 
 *  could be substituted with identical results.
 */

public class NestedFor
{
    public static void main (String [] args)
    {
        // separate loops
        // this version has no connection between the loops
        //int i;
        
        // first, run the 'i' loop completely from start to finish
        for (int i = 0; i < 5; i++) {
            System.out.print("-");
        }
        
        // next, run through the 'j' loop completely from start to finish
        for (int j = 0; j < 5; j++) {
            System.out.print("@");
        }
        
        // end the current line
        System.out.println();
        
        // nested loops, version 1
        // this version runs through a complete the 'j' loop every time you 
        // get a new value for i
        // So, you'll get a lot more '@' signs printed than '-' symbols
        for (int i = 0; i < 5; i++) {
            System.out.print("-");  
            // every time you get a new value for i, do entire 'j' loop
            for (int j = 0; j < 5; j++) {
                System.out.print("@");
            }   // end inner for loop
        }   // end outer for loop
        
        // end the current line
        System.out.println();
        
        // nested loops, version 2
        // this version does the 'j' loop every time you get a new value for i,
        // but j's initial value depends on i
        // This means that the number of iterations in the 'j' loops gets
        // reduced by one each time i changes, because j gets its initial value
        // from the current value of i.
        for (int i = 0; i < 5; i++) {
            System.out.print("-");  
            for (int j = i; j < 5; j++) {
                System.out.print("@");
            }   // end inner for loop
        }   // end outer for loop
     }     
}