Pattern

Pattern.java

public class Pattern {
    
    public static void main(String[] args) {
        
        int width  = 150;
        int height = 70;
        
        int[][] grid = new int[width][height];
        grid[width/2][0] = 1;
        
        for (int f=1; f<height; f++) {
            for (int i=1; i<width-1; i++) {
                if (grid[i-1][f-1] == 1 && grid[i+1][f-1] == 0) {
                    grid[i][f] = 1;
                }
                if (grid[i-1][f-1] == 0 && grid[i+1][f-1] == 1) {
                    grid[i][f] = 1;
                }
            }
        }
        
        // Print it out
        for (int i=0; i<height; i++) {
            for (int j=0; j<width; j++) {
                if (grid[j][i] == 1) {
                    System.out.print("X");
                }
                else {
                    System.out.print(" ");
                }
            }
            System.out.println();
        }
    }
    
}