摘要: Given a non-negative integer n, count all numbers with unique digits, x, where 0 ≤ x < 10n. Example: Input: 2 Output: 91 Explanation: The answer shoul 阅读全文
posted @ 2018-09-24 23:23 C`Moriarty 阅读(132) 评论(0) 推荐(0) 编辑
/* 鼠标点击求赞文字特效 */ /*鼠标跟随效果*/