1 public static int gcd(List<Integer> list) { 2 BigInteger result = new BigInteger(String.valueOf(list.get(0))); 3 for (int i = 1; i < list.size(); i++) { 4 result = result.gcd(new BigInteger(String.valueOf(list.get(i)))); 5 } 6 return result.intValue(); 7 }