Homework: Pyramid

1.simple version
    *
    **
    ***
    ****
    *****
    ******
    *******
    ********
    *********
    **********
    ***********
    **********
    *********
    ********
    *******
    ******
    *****
    ****
    ***
    **
    *
    
    2. modulus with array
    *
    ***
    *****
    *******
    *********
    **********
    *********
    *******
    *****
    ***
    *


    import java.util.ArrayList;
    import java.util.List;
    
    
    public class pyramidDrawing {
    
    	public static void main(String[] args) {
    		
    		simpleDrawing(10);
    		arrayDrawing(10);
    		
    	}
    	
    	
    	public static void simpleDrawing(int number) {
    		for(int i = 1; i <= number; i++) {
    			for(int j = 1; j <= i; j++) {
    				System.out.print("*");
    			}
    			System.out.println();			
    		}
    		
    		for(int x = 1; x <= (number+1) ; x++) {
    			System.out.print("*");
    		}
    		System.out.println();		
    		
    		for(int v = number; v >= 1; v--) {
    			for(int q = 1; q <= v; q++) {
    				System.out.print("*");
    			}
    			System.out.println();			
    		}		
    	}
    	
    	
    	public static void arrayDrawing(int number) {
    		List<Integer> numbers = new ArrayList<Integer>();
    		
    		for(int num = 1 ; num <= number; num++) {
    			numbers.add(num);
    		}
    		
    		for(int i = 0; i < numbers.size(); i++) {
    			if(i % 2 == 0) {
    				for(int j = 0; j <= i; j++) {
    					System.out.print("*");
    				}
    				System.out.println();
    			}
    		}
    		
    		for(int x = 1; x <= (numbers.size()) ; x++) {
    			System.out.print("*");
    		}
    		System.out.println();
    		
    		for(int v = numbers.size(); v >= 0; v--) {
    			if(v % 2 != 0) {
    				for(int q = 1; q <= v; q++) {
    					System.out.print("*");
    				}
    				System.out.println();
    			}
    		}		
    	}
    }