fibonacci sequence
public class Numbers { public static void FibannaciNumbers(int n) { int x = 0; int y = 1; if(n >= 1) { System.out.print(x + " "); } if(n >= 2) { System.out.print(y); } if (n > 2) { for(int a = n - 2; a > 0; a--) { int z = y + x; System.out.print(" " + z); x = y; y = z; } } } }