292 Nim Game

drunkpiano 2017/6/24 19:51:12 1~3: win 4: lose 5 : win 6 : win 7 : win
8 : lose 9 : win 10: win 11: win 12: lose 找一下规律，会发现答案是：

    public boolean canWinNim(int n) {
            return n%4 != 0;   
    }