import java.util.List;
import java.util.ArrayList;
/**
 * @author jxqlovejava
 * 斐波那契数列
 */
public class Fibonacci {
 public static List<Integer> fibonacci(int size) throws Exception {
  int first = 0;
  int second = 1;
  List<Integer> result = new ArrayList<Integer> ();
  result.add(first);
  result.add(second);
  if(size < 0) {
   throw new Exception("Illegal argument!");
  }
  else if(size <= 2) {
   return result.subList(0, size);
  }
  int next;
  int count = 2; // 当前已经推导出的元素个数
  while(count++ < size) { // 基于fib(0)和fib(1)递推其他元素
   next = first + second;
   first = second;
   second = next;
   result.add(next);
  }
  return result;
 }
 public static void main(String[] args) throws Exception {
  List<Integer> fibArray = fibonacci(10);
  for(int i: fibArray) {
   System.out.print(i + "\t");
  }
 }
}